diff --git a/gradle.properties b/gradle.properties
index 01ad493..0f563a9 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -7,7 +7,7 @@ yarn_mappings=1.21.4+build.8
 loader_version=0.19.3
 
 # Mod Properties
-mod_version=2.0.1
+mod_version=2.1.0
 maven_group=autodig
 archives_base_name=autodig
 
diff --git a/src/main/java/autodig/client/config/ConfigStore.java b/src/main/java/autodig/client/config/ConfigStore.java
index 076547c..f5aa7cc 100644
--- a/src/main/java/autodig/client/config/ConfigStore.java
+++ b/src/main/java/autodig/client/config/ConfigStore.java
@@ -84,6 +84,10 @@ public final class ConfigStore {
         if (c.netherOres == null || c.netherOres.isBlank()) {
             c.netherOres = "ancient_debris";
         }
+        c.trashReserve = clamp(c.trashReserve, 0, 2304);
+        if (c.trashItems == null || c.trashItems.isBlank()) {
+            c.trashItems = "cobblestone,cobbled_deepslate,deepslate,tuff,dirt,granite,diorite,andesite,netherrack,blackstone,basalt";
+        }
         return c;
     }
 
diff --git a/src/main/java/autodig/client/config/DigConfig.java b/src/main/java/autodig/client/config/DigConfig.java
index b418a23..94709b0 100644
--- a/src/main/java/autodig/client/config/DigConfig.java
+++ b/src/main/java/autodig/client/config/DigConfig.java
@@ -35,6 +35,16 @@ public class DigConfig {
     /** 工具耐久阈值（百分比 0-100），低于此值停止挖矿 */
     public int toolDurabilityThreshold = 15;
 
+    // ---- 装备与背包管理 ----
+    /** 装备耐久过低时自动从背包换上同类备用装备（工具按类别、护甲按部位），无备用才暂停 */
+    public boolean autoGearSwap = true;
+    /** 背包满时自动丢弃垃圾物品（按 trashItems 清单） */
+    public boolean autoTrash = true;
+    /** 垃圾物品清单（逗号分隔的物品 id，如 cobblestone,tuff,deepslate） */
+    public String trashItems = "cobblestone,cobbled_deepslate,deepslate,tuff,dirt,granite,diorite,andesite,netherrack,blackstone,basalt";
+    /** 方块类垃圾保留数量（供 Baritone 搭路/垫脚），0 为不保留 */
+    public int trashReserve = 64;
+
     // ---- 岩浆/障碍 ----
     /** 优先绕开岩浆池（给岩浆方块额外寻路代价） */
     public boolean avoidLava = true;
@@ -81,6 +91,11 @@ public class DigConfig {
         return parseOreList(this.netherOres);
     }
 
+    /** 获取垃圾物品清单 */
+    public List<String> getTrashItemList() {
+        return parseOreList(this.trashItems);
+    }
+
     private static List<String> parseOreList(String str) {
         if (str == null || str.isBlank()) {
             return List.of();
@@ -103,6 +118,10 @@ public class DigConfig {
         c.armorDurabilityThreshold = this.armorDurabilityThreshold;
         c.toolDurabilityProtection = this.toolDurabilityProtection;
         c.toolDurabilityThreshold = this.toolDurabilityThreshold;
+        c.autoGearSwap = this.autoGearSwap;
+        c.autoTrash = this.autoTrash;
+        c.trashItems = this.trashItems;
+        c.trashReserve = this.trashReserve;
         c.avoidLava = this.avoidLava;
         c.killAura = this.killAura;
         c.killAuraSafe = this.killAuraSafe;
diff --git a/src/main/java/autodig/client/controller/DigController.java b/src/main/java/autodig/client/controller/DigController.java
index 15dcd58..bd7f374 100644
--- a/src/main/java/autodig/client/controller/DigController.java
+++ b/src/main/java/autodig/client/controller/DigController.java
@@ -6,11 +6,12 @@ import autodig.client.config.MineTask;
 import autodig.client.miner.NetherMiner;
 import autodig.client.miner.OverworldMiner;
 import autodig.client.service.AutoEat;
+import autodig.client.service.AutoGear;
+import autodig.client.service.AutoTrash;
 import autodig.client.service.DeathRecorder;
 import autodig.client.service.KillAura;
 import net.minecraft.client.MinecraftClient;
 import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.entity.player.PlayerInventory;
 import net.minecraft.item.ItemStack;
 import net.minecraft.text.Text;
 import net.minecraft.util.math.BlockPos;
@@ -18,7 +19,8 @@ import net.minecraft.world.Heightmap;
 
 /**
  * 挖矿总控制器：把配置、Baritone 桥接、自动进食、杀戮光环、死亡记录、装备耐久
- * 保护和各任务专用挖矿器串起来，驱动一个简单的状态机。
+ * 保护（自动换备用装备）、背包垃圾清理和各任务专用挖矿器串起来，
+ * 驱动一个简单的状态机。
  */
 public final class DigController {
 
@@ -30,6 +32,8 @@ public final class DigController {
     private final BaritoneBridge bridge = new BaritoneBridge();
     private final AutoEat autoEat = new AutoEat();
     private final KillAura killAura = new KillAura();
+    private final AutoGear autoGear = new AutoGear();
+    private final AutoTrash autoTrash = new AutoTrash();
     private final DeathRecorder deathRecorder = new DeathRecorder();
     private final OverworldMiner overworld = new OverworldMiner(this.bridge);
     private final NetherMiner nether = new NetherMiner(this.bridge);
@@ -52,9 +56,11 @@ public final class DigController {
         }
         PlayerEntity player = client.player;
 
-        // 常驻能力：杀戮光环、自动进食
+        // 常驻能力：杀戮光环、自动进食、背包满丢垃圾、换装冷却
         this.killAura.tick(config);
         this.autoEat.tick(config);
+        this.autoTrash.tick(config);
+        this.autoGear.tick();
 
         // 死亡处理：死亡瞬间暂停任务，重生后按需回到死亡坐标
         this.deathRecorder.tick(config, this::onRespawn);
@@ -64,30 +70,37 @@ public final class DigController {
         }
 
         // 装备耐久保护（仅在挖矿任务进行中检查）
-        if (config.task != MineTask.NONE && this.state != State.GEAR_PROTECTION) {
-            if (this.isGearLowDurability(config, player)) {
-                this.preGearState = this.state;
-                this.bridge.cancelAll();
-                // 下界模式：装备耐久低时直接返程回主世界
-                if (config.task == MineTask.NETHER && config.netherAutoReturn) {
-                    this.nether.markGearBroken();
-                    this.setState(State.NETHER, "装备耐久过低，下界返程中");
-                } else {
-                    this.setState(State.GEAR_PROTECTION, "装备耐久过低，暂停挖矿保装备");
+        if (config.task != MineTask.NONE) {
+            boolean gearLow = this.isGearLowDurability(config, player);
+            if (this.state == State.GEAR_PROTECTION) {
+                // 保护中持续尝试自动换上备用装备，换上后自动恢复任务
+                if (config.autoGearSwap && gearLow) {
+                    this.autoGear.handleLowGear(config, player);
+                    gearLow = this.isGearLowDurability(config, player);
                 }
-                return;
-            }
-        }
-
-        // 装备耐久保护恢复
-        if (this.state == State.GEAR_PROTECTION) {
-            if (!this.isGearLowDurability(config, player)) {
-                this.setState(this.preGearState != null ? this.preGearState : State.IDLE,
-                        "装备耐久已恢复，继续挖矿");
-                this.preGearState = null;
-            } else {
-                // 仍在装备保护中，等待玩家换装备
-                return;
+                if (!gearLow) {
+                    this.setState(this.preGearState != null ? this.preGearState : State.IDLE,
+                            "装备耐久已恢复，继续挖矿");
+                    this.preGearState = null;
+                } else {
+                    // 仍在装备保护中，等待换装生效或玩家手动处理
+                    return;
+                }
+            } else if (gearLow) {
+                // 先尝试自动换上背包里的备用装备，能换就不打断挖矿
+                if (!(config.autoGearSwap && this.autoGear.handleLowGear(config, player))) {
+                    this.preGearState = this.state;
+                    this.bridge.cancelAll();
+                    // 下界模式：无备用装备时直接返程回主世界
+                    if (config.task == MineTask.NETHER && config.netherAutoReturn) {
+                        this.nether.markGearBroken();
+                        this.setState(State.NETHER, "装备耐久过低且无备用装备，下界返程中");
+                    } else {
+                        this.setState(State.GEAR_PROTECTION, "装备耐久过低且无备用装备，暂停挖矿保装备");
+                    }
+                    return;
+                }
+                // 换装成功：继续正常流程
             }
         }
 
@@ -318,7 +331,7 @@ public final class DigController {
     /**
      * 检查装备耐久是否过低。
      * 护甲：任意一件护甲耐久百分比低于阈值
-     * 工具：手持工具耐久百分比低于阈值
+     * 工具：手持工具（镐/斧/锹/锄/剑）耐久百分比低于阈值
      */
     private boolean isGearLowDurability(DigConfig config, PlayerEntity player) {
         // 护甲耐久检查
@@ -335,10 +348,10 @@ public final class DigController {
                 }
             }
         }
-        // 手持工具耐久检查
+        // 手持工具耐久检查（只关心真正的工具，不误伤钓鱼竿/打火石等杂物）
         if (config.toolDurabilityProtection) {
             ItemStack mainHand = player.getMainHandStack();
-            if (!mainHand.isEmpty() && mainHand.isDamageable()) {
+            if (AutoGear.isTool(mainHand) && mainHand.isDamageable()) {
                 int maxDmg = mainHand.getMaxDamage();
                 int remaining = maxDmg - mainHand.getDamage();
                 double percent = (double) remaining / maxDmg * 100.0;
diff --git a/src/main/java/autodig/client/gui/AutoDigGui.java b/src/main/java/autodig/client/gui/AutoDigGui.java
index ca54fb4..e8e593f 100644
--- a/src/main/java/autodig/client/gui/AutoDigGui.java
+++ b/src/main/java/autodig/client/gui/AutoDigGui.java
@@ -56,6 +56,7 @@ public final class AutoDigGui extends Screen {
 
     private TextFieldWidget overworldOresField;
     private TextFieldWidget netherOresField;
+    private TextFieldWidget trashField;
 
     public AutoDigGui(AutoDigModClient mod) {
         super(Text.literal("AutoDig"));
@@ -72,6 +73,7 @@ public final class AutoDigGui extends Screen {
         this.scrollOffset = 0;
         this.overworldOresField = null;
         this.netherOresField = null;
+        this.trashField = null;
 
         // 面板宽度自适应窗口，最小 200 保证 +/- 与输入框可用
         this.panelW = MathHelper.clamp(this.width - 16, 200, 400);
@@ -111,6 +113,12 @@ public final class AutoDigGui extends Screen {
                     "下界协同杀戮光环", () -> this.config.killAuraInNether, v -> this.config.killAuraInNether = v);
             y = this.checkPair(y, "护甲耐久保护", () -> this.config.armorDurabilityProtection, v -> this.config.armorDurabilityProtection = v,
                     "工具耐久保护", () -> this.config.toolDurabilityProtection, v -> this.config.toolDurabilityProtection = v);
+            y = this.checkPair(y, "自动换备用装备", () -> this.config.autoGearSwap, v -> this.config.autoGearSwap = v,
+                    "背包满丢垃圾", () -> this.config.autoTrash, v -> {
+                        this.syncFields(); // 保留输入框中未应用的编辑
+                        this.config.autoTrash = v;
+                        this.init(); // 切换后显示/隐藏垃圾设置区
+                    });
             y += 10;
 
             y = this.header(y, "装备耐久阈值（低于即停，百分比）");
@@ -120,6 +128,15 @@ public final class AutoDigGui extends Screen {
                     v -> this.config.toolDurabilityThreshold = v, 1, 100);
             y += 10;
 
+            if (this.config.autoTrash) {
+                y = this.header(y, "垃圾丢弃设置");
+                y = this.numberRow(y, "方块垃圾保留量", () -> this.config.trashReserve,
+                        v -> this.config.trashReserve = v, 0, 2304);
+                y = this.fieldRow(y, "垃圾物品（逗号分隔的物品 id）",
+                        this.config.trashItems, tf -> this.trashField = tf);
+                y += 10;
+            }
+
             if (this.config.task == MineTask.OVERWORLD) {
                 y = this.header(y, "主世界设置");
                 y = this.numberRow(y, "挖掘层 (Y)", () -> this.config.overworldLevel,
@@ -226,6 +243,7 @@ public final class AutoDigGui extends Screen {
         boolean selected = this.config.task == task;
         String text = selected ? "■ " + label : "□ " + label;
         return this.addDrawableChild(this.textButton(text, b -> {
+            this.syncFields(); // 保留输入框中未应用的编辑
             this.config.task = task;
             this.init(); // 切换任务：重建滚动区，只显示相关设置
         }, x, y, w));
@@ -339,6 +357,9 @@ public final class AutoDigGui extends Screen {
         if (this.netherOresField != null) {
             this.config.netherOres = this.netherOresField.getText();
         }
+        if (this.trashField != null) {
+            this.config.trashItems = this.trashField.getText();
+        }
     }
 
     /** 把界面临时配置写回 mod 全局配置并保存（供 controller 实时读取）。 */
@@ -364,6 +385,10 @@ public final class AutoDigGui extends Screen {
         target.armorDurabilityThreshold = this.config.armorDurabilityThreshold;
         target.toolDurabilityProtection = this.config.toolDurabilityProtection;
         target.toolDurabilityThreshold = this.config.toolDurabilityThreshold;
+        target.autoGearSwap = this.config.autoGearSwap;
+        target.autoTrash = this.config.autoTrash;
+        target.trashItems = this.config.trashItems;
+        target.trashReserve = this.config.trashReserve;
         this.mod.saveConfig();
     }
 
diff --git a/src/main/java/autodig/client/miner/NetherMiner.java b/src/main/java/autodig/client/miner/NetherMiner.java
index a3f0f5f..2697fb8 100644
--- a/src/main/java/autodig/client/miner/NetherMiner.java
+++ b/src/main/java/autodig/client/miner/NetherMiner.java
@@ -2,9 +2,14 @@ package autodig.client.miner;
 
 import autodig.client.bridge.BaritoneBridge;
 import autodig.client.config.DigConfig;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Map;
+import java.util.Set;
 import net.minecraft.client.MinecraftClient;
 import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.item.ItemStack;
+import net.minecraft.registry.Registries;
 import net.minecraft.registry.RegistryKey;
 import net.minecraft.world.World;
 
@@ -16,7 +21,8 @@ import net.minecraft.world.World;
  * 死亡重生的返回逻辑由控制器统一处理，本类每次 tick 依据当前所在维度
  * 自适应地执行对应阶段。</p>
  *
- * <p>下界无死亡不掉落，比主世界更"惜命"：血量低或装备耐久低时主动触发返程。</p>
+ * <p>下界无死亡不掉落，比主世界更"惜命"：血量低或装备耐久低时主动触发返程。
+ * 背包满采用去抖判定（连续 1 秒都满才算真满），给自动丢垃圾服务留出腾位时间。</p>
  */
 public final class NetherMiner {
 
@@ -33,6 +39,31 @@ public final class NetherMiner {
         RETURN_PORTAL
     }
 
+    /** 背包满去抖阈值（tick）：连续这么久都满才认定为真满 */
+    private static final int FULL_DEBOUNCE_TICKS = 20;
+
+    /** 常见矿物方块 id -> 掉落物品 id（挖掘产物与方块本身不同的情况） */
+    private static final Map<String, String> ORE_TO_DROP = Map.ofEntries(
+            Map.entry("diamond_ore", "diamond"),
+            Map.entry("deepslate_diamond_ore", "diamond"),
+            Map.entry("emerald_ore", "emerald"),
+            Map.entry("deepslate_emerald_ore", "emerald"),
+            Map.entry("lapis_ore", "lapis_lazuli"),
+            Map.entry("deepslate_lapis_ore", "lapis_lazuli"),
+            Map.entry("redstone_ore", "redstone"),
+            Map.entry("deepslate_redstone_ore", "redstone"),
+            Map.entry("coal_ore", "coal"),
+            Map.entry("deepslate_coal_ore", "coal"),
+            Map.entry("copper_ore", "raw_copper"),
+            Map.entry("deepslate_copper_ore", "raw_copper"),
+            Map.entry("iron_ore", "raw_iron"),
+            Map.entry("deepslate_iron_ore", "raw_iron"),
+            Map.entry("gold_ore", "raw_gold"),
+            Map.entry("deepslate_gold_ore", "raw_gold"),
+            Map.entry("nether_gold_ore", "gold_nugget"),
+            Map.entry("nether_quartz_ore", "quartz"));
+    // ancient_debris 挖掉落后就是 ancient_debris 物品，走默认映射
+
     private Stage stage = Stage.GO_COMMIT;
     private boolean done;
     /** 结束原因是否为「背包已满」 */
@@ -41,12 +72,19 @@ public final class NetherMiner {
     private boolean fled;
     /** 结束原因是否为「装备耐久过低触发返程」 */
     private boolean gearBroken;
+    /** 外部（控制器）要求的强制返程 */
+    private boolean forceReturn;
     /** 是否已派发过挖矿指令（用于区分「尚未开始」和「已经挖完」） */
     private boolean miningStarted;
     /** 派发节流 */
     private long lastIssue;
-    /** 已挖到的目标矿物数量（通过扫描背包近似） */
+    /** 已挖到的目标矿物数量（按背包产物计数，扣除任务开始时的基线） */
     private int minedCount;
+    /** 任务开始时背包里已有的目标产物数量（避免老库存被误计为战果） */
+    private int baselineCount;
+    private boolean baselineSet;
+    /** 背包满连续持续的 tick 数（去抖） */
+    private int fullTicks;
 
     public NetherMiner(BaritoneBridge bridge) {
         this.bridge = bridge;
@@ -59,8 +97,12 @@ public final class NetherMiner {
         this.full = false;
         this.fled = false;
         this.gearBroken = false;
+        this.forceReturn = false;
         this.miningStarted = false;
         this.minedCount = 0;
+        this.baselineCount = 0;
+        this.baselineSet = false;
+        this.fullTicks = 0;
     }
 
     /**
@@ -79,13 +121,14 @@ public final class NetherMiner {
         boolean inOverworld = dim == World.OVERWORLD;
         boolean inNether = dim == World.NETHER;
 
-        // 下界惜命：血量过低时触发返程
-        if (inNether && config.netherFleeHealthThreshold > 0
+        // 下界惜命：血量过低时触发返程（只触发一次，避免反复取消回程寻路）
+        if (inNether && this.stage != Stage.RETURN_PORTAL && !this.done
+                && config.netherFleeHealthThreshold > 0
                 && this.healthPercent(player) < config.netherFleeHealthThreshold) {
             this.fled = true;
             this.miningStarted = false;
-            this.bridge.cancelAll();
             if (config.netherAutoReturn) {
+                this.bridge.cancelAll();
                 this.stage = Stage.RETURN_PORTAL;
             } else {
                 this.done = true;
@@ -93,6 +136,13 @@ public final class NetherMiner {
             return this.done;
         }
 
+        // 外部标记（装备耐久过低等）：直接进入返程
+        if (this.forceReturn && inNether && this.stage != Stage.RETURN_PORTAL) {
+            this.miningStarted = false;
+            this.bridge.cancelAll();
+            this.stage = Stage.RETURN_PORTAL;
+        }
+
         switch (this.stage) {
             case GO_COMMIT -> {
                 // 选择去哪个维度
@@ -114,7 +164,20 @@ public final class NetherMiner {
                     // 意外回到主世界，重走流程
                     this.stage = Stage.GO_COMMIT;
                     this.miningStarted = false;
-                } else if (this.inventoryFull(player)) {
+                    return this.done;
+                }
+                // 记录任务开始时背包已有的产物数量作为基线
+                if (!this.baselineSet) {
+                    this.baselineCount = this.countProducts(config, player);
+                    this.baselineSet = true;
+                }
+                // 背包满去抖：连续一段时间都满才认定为真满（给自动丢垃圾留时间）
+                if (this.inventoryFull(player)) {
+                    this.fullTicks++;
+                } else {
+                    this.fullTicks = 0;
+                }
+                if (this.fullTicks >= FULL_DEBOUNCE_TICKS) {
                     // 背包已满：期望回程则去传送门；不回程时无处可放，直接结束
                     this.full = true;
                     this.miningStarted = false;
@@ -123,7 +186,7 @@ public final class NetherMiner {
                     } else {
                         this.done = true;
                     }
-                } else if (this.minedEnough(config)) {
+                } else if (this.minedEnough(config, player)) {
                     // 已挖够目标数量
                     this.miningStarted = false;
                     if (config.netherAutoReturn) {
@@ -132,7 +195,7 @@ public final class NetherMiner {
                         this.done = true;
                     }
                 } else if (this.miningStarted && !this.bridge.isActive()) {
-                    // 挖矿进程已跑完（附近无矿可挖）
+                    // 挖矿进程已跑完（挖够数量或附近无矿可挖）
                     this.miningStarted = false;
                     if (config.netherAutoReturn) {
                         this.stage = Stage.RETURN_PORTAL;
@@ -163,35 +226,40 @@ public final class NetherMiner {
         return this.done;
     }
 
-    /** 判断是否已挖够目标矿物数量 */
-    private boolean minedEnough(DigConfig config) {
+    /** 判断是否已挖够目标矿物数量（按背包产物计数，扣除任务开始时的基线）。 */
+    private boolean minedEnough(DigConfig config, PlayerEntity player) {
         if (config.netherTargetCount <= 0) {
             return false; // -1 或 0 表示无限挖
         }
-        // 通过扫描背包中目标矿物数量近似判断
-        MinecraftClient client = MinecraftClient.getInstance();
-        if (client.player == null) {
-            return false;
+        this.minedCount = this.countProducts(config, player) - this.baselineCount;
+        return this.minedCount >= config.netherTargetCount;
+    }
+
+    /** 统计背包中目标矿物产物的总数量（方块 id 映射到掉落物 id）。 */
+    private int countProducts(DigConfig config, PlayerEntity player) {
+        List<String> ores = config.getNetherOreList();
+        if (ores.isEmpty()) {
+            return 0;
         }
-        int count = 0;
-        var ores = config.getNetherOreList();
+        Set<String> products = new HashSet<>();
+        for (String ore : ores) {
+            products.add(ORE_TO_DROP.getOrDefault(ore, ore));
+        }
+        int total = 0;
         for (int i = 0; i < 36; i++) {
-            var stack = client.player.getInventory().main.get(i);
+            ItemStack stack = player.getInventory().main.get(i);
             if (stack.isEmpty()) {
                 continue;
             }
-            // 通过物品的 toString 粗略匹配矿物名
-            String itemName = stack.getItem().toString();
-            for (String ore : ores) {
-                // ancient_debris -> ancient_debris, nether_gold_ore -> nether_gold_ore
-                if (itemName.contains(ore) || ore.contains(itemName)) {
-                    count += stack.getCount();
-                    break;
-                }
+            if (products.contains(itemId(stack))) {
+                total += stack.getCount();
             }
         }
-        this.minedCount = count;
-        return count >= config.netherTargetCount;
+        return total;
+    }
+
+    private static String itemId(ItemStack stack) {
+        return Registries.ITEM.getId(stack.getItem()).toString();
     }
 
     private void issue(Runnable action) {
@@ -234,13 +302,14 @@ public final class NetherMiner {
         return this.gearBroken;
     }
 
-    /** 标记装备耐久过低，触发返程 */
+    /** 标记装备耐久过低，触发强制返程 */
     public void markGearBroken() {
         this.gearBroken = true;
+        this.forceReturn = true;
         this.miningStarted = false;
     }
 
-    /** @return 已挖到的目标矿物数量 */
+    /** @return 本次任务新挖到的目标矿物数量 */
     public int getMinedCount() {
         return this.minedCount;
     }
diff --git a/src/main/java/autodig/client/miner/OverworldMiner.java b/src/main/java/autodig/client/miner/OverworldMiner.java
index 43f7ad6..27f50b9 100644
--- a/src/main/java/autodig/client/miner/OverworldMiner.java
+++ b/src/main/java/autodig/client/miner/OverworldMiner.java
@@ -35,6 +35,11 @@ public final class OverworldMiner {
     private long lastIssue;
     /** 上一次打印诊断日志的时间戳，用于节流 */
     private long lastLog;
+    /** 背包满连续持续的 tick 数（去抖：给自动丢垃圾留出腾位时间） */
+    private int fullTicks;
+
+    /** 背包满去抖阈值（tick）：连续这么久都满才认定为真满 */
+    private static final int FULL_DEBOUNCE_TICKS = 20;
 
     public OverworldMiner(BaritoneBridge bridge) {
         this.bridge = bridge;
@@ -64,6 +69,7 @@ public final class OverworldMiner {
         this.step = 0;
         this.done = false;
         this.full = false;
+        this.fullTicks = 0;
     }
 
     private List<BlockPos> buildPlan(BlockPos base, int y, int trunkLen, int branchLen, int branchGap, int axis, int sign) {
@@ -105,11 +111,17 @@ public final class OverworldMiner {
         if (player == null) {
             return true;
         }
+        // 背包满去抖：连续一段时间都满才认定为真满（给自动丢垃圾留出腾位时间）
         if (this.inventoryFull(player)) {
-            this.done = true;
-            this.full = true;
-            System.out.println("[AutoDig] overworld 结束：背包已满");
-            return true;
+            this.fullTicks++;
+            if (this.fullTicks >= FULL_DEBOUNCE_TICKS) {
+                this.done = true;
+                this.full = true;
+                System.out.println("[AutoDig] overworld 结束：背包已满");
+                return true;
+            }
+        } else {
+            this.fullTicks = 0;
         }
         if (this.step >= this.plan.size()) {
             this.done = true;
@@ -194,6 +206,7 @@ public final class OverworldMiner {
         this.step = best;
         this.done = false;
         this.full = false;
+        this.fullTicks = 0;
     }
 
     /**
diff --git a/src/main/java/autodig/client/service/AutoGear.java b/src/main/java/autodig/client/service/AutoGear.java
new file mode 100644
index 0000000..0b0fd97
--- /dev/null
+++ b/src/main/java/autodig/client/service/AutoGear.java
@@ -0,0 +1,196 @@
+package autodig.client.service;
+
+import autodig.client.config.DigConfig;
+import net.minecraft.client.MinecraftClient;
+import net.minecraft.client.network.ClientPlayerInteractionManager;
+import net.minecraft.entity.EquipmentSlot;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.entity.player.PlayerInventory;
+import net.minecraft.item.ArmorItem;
+import net.minecraft.item.AxeItem;
+import net.minecraft.item.HoeItem;
+import net.minecraft.item.Item;
+import net.minecraft.item.ItemStack;
+import net.minecraft.item.PickaxeItem;
+import net.minecraft.item.ShovelItem;
+import net.minecraft.item.SwordItem;
+import net.minecraft.screen.ScreenHandler;
+import net.minecraft.screen.slot.SlotActionType;
+
+/**
+ * 装备自动更换服务。
+ *
+ * <p>当护甲或手持工具耐久过低时，从背包里寻找同类别（工具：镐/斧/锹/锄/剑；
+ * 护甲：同部位头/胸/腿/脚）且剩余耐久更高的备用装备，通过对玩家背包
+ * ScreenHandler 的三次点击完成交换：拿起旧装备 → 与背包中的新装备互换 →
+ * 新装备就位。交换走正规网络包（clickSlot），客户端/服务端自动同步，
+ * 单人/多人均可用。找不到备用装备时返回 false，由控制器走"暂停保装备"或
+ * "下界返程"逻辑。</p>
+ */
+public final class AutoGear {
+
+    /** 每次换装后的冷却 tick 数：等待客户端预测/服务端确认生效，避免连续误判 */
+    private static final int SWAP_COOLDOWN_TICKS = 10;
+
+    private int coolTicks;
+
+    /** 每帧推进冷却。 */
+    public void tick() {
+        if (this.coolTicks > 0) {
+            this.coolTicks--;
+        }
+    }
+
+    /**
+     * 尝试处理低耐久装备：用背包里的备用装备换下低耐久装备。
+     *
+     * @return true 表示本次（或最近一次）已成功换装，调用方可继续挖矿；
+     *         false 表示当前没有可用的备用装备
+     */
+    public boolean handleLowGear(DigConfig config, PlayerEntity player) {
+        if (this.coolTicks > 0) {
+            return true; // 刚换过装，等待生效
+        }
+        MinecraftClient client = MinecraftClient.getInstance();
+        if (client.interactionManager == null) {
+            return false;
+        }
+        // 只在玩家背包界面（未打开箱子等容器）且鼠标上没拿着物品时操作
+        if (player.currentScreenHandler != player.playerScreenHandler) {
+            return false;
+        }
+        if (!player.currentScreenHandler.getCursorStack().isEmpty()) {
+            return false;
+        }
+        PlayerInventory inv = player.getInventory();
+
+        // 1. 手持工具：同类别里找剩余耐久最高的备用工具
+        ItemStack held = player.getMainHandStack();
+        if (isTool(held) && held.isDamageable()
+                && this.durabilityPct(held) < config.toolDurabilityThreshold) {
+            ItemStack repl = this.findToolReplacement(inv, held);
+            if (repl != null && this.swap(player, held, repl)) {
+                this.coolTicks = SWAP_COOLDOWN_TICKS;
+                return true;
+            }
+        }
+
+        // 2. 护甲：逐件找同部位、剩余耐久更高的备用护甲
+        for (int i = 0; i < 4; i++) {
+            ItemStack piece = inv.armor.get(i);
+            if (piece.isEmpty() || !piece.isDamageable()) {
+                continue;
+            }
+            if (this.durabilityPct(piece) >= config.armorDurabilityThreshold) {
+                continue;
+            }
+            ItemStack repl = this.findArmorReplacement(player, inv, i, piece);
+            if (repl != null && this.swap(player, piece, repl)) {
+                this.coolTicks = SWAP_COOLDOWN_TICKS;
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /** 手持工具的替换候选：同类别中剩余耐久最高且高于当前手持的。 */
+    private ItemStack findToolReplacement(PlayerInventory inv, ItemStack held) {
+        String kind = toolKind(held.getItem());
+        if (kind == null) {
+            return null;
+        }
+        ItemStack best = null;
+        for (int i = 0; i < 36; i++) {
+            if (i == inv.selectedSlot) {
+                continue; // 跳过当前手持槽位
+            }
+            ItemStack s = inv.main.get(i);
+            if (s.isEmpty() || !s.isDamageable() || !kind.equals(toolKind(s.getItem()))) {
+                continue;
+            }
+            if (best == null || this.remaining(s) > this.remaining(best)) {
+                best = s;
+            }
+        }
+        return best != null && this.remaining(best) > this.remaining(held) ? best : null;
+    }
+
+    /** 护甲替换候选：同部位中剩余耐久最高且高于当前穿戴的。 */
+    private ItemStack findArmorReplacement(PlayerEntity player, PlayerInventory inv, int armorIndex, ItemStack current) {
+        ItemStack best = null;
+        for (int i = 0; i < 36; i++) {
+            ItemStack s = inv.main.get(i);
+            if (s.isEmpty() || !(s.getItem() instanceof ArmorItem)) {
+                continue;
+            }
+            if (this.armorSlotIndex(player, s) != armorIndex) {
+                continue;
+            }
+            if (best == null || this.remaining(s) > this.remaining(best)) {
+                best = s;
+            }
+        }
+        return best != null && this.remaining(best) > this.remaining(current) ? best : null;
+    }
+
+    /** 背包里的护甲对应的护甲槽位下标（0=鞋 1=腿 2=胸 3=头），不可穿戴返回 -1。 */
+    private int armorSlotIndex(PlayerEntity player, ItemStack stack) {
+        EquipmentSlot slot = player.getPreferredEquipmentSlot(stack);
+        if (slot != EquipmentSlot.HEAD && slot != EquipmentSlot.CHEST
+                && slot != EquipmentSlot.LEGS && slot != EquipmentSlot.FEET) {
+            return -1;
+        }
+        return slot.getEntitySlotId();
+    }
+
+    /**
+     * 三次点击完成装备交换：
+     * 点击旧装备槽（拿起）→ 点击背包新装备槽（互换）→ 再点旧装备槽（新装备就位）。
+     */
+    private boolean swap(PlayerEntity player, ItemStack equipped, ItemStack replacement) {
+        ScreenHandler handler = player.currentScreenHandler;
+        int equippedSlot = this.screenSlotOf(handler, equipped);
+        int bagSlot = this.screenSlotOf(handler, replacement);
+        if (equippedSlot < 0 || bagSlot < 0 || equippedSlot == bagSlot) {
+            return false;
+        }
+        ClientPlayerInteractionManager im = MinecraftClient.getInstance().interactionManager;
+        int syncId = handler.syncId;
+        im.clickSlot(syncId, equippedSlot, 0, SlotActionType.PICKUP, player); // 拿起旧装备
+        im.clickSlot(syncId, bagSlot, 0, SlotActionType.PICKUP, player);      // 与背包新装备互换
+        im.clickSlot(syncId, equippedSlot, 0, SlotActionType.PICKUP, player); // 新装备就位
+        return true;
+    }
+
+    /** 按对象引用在 ScreenHandler 里找槽位下标（护甲/背包槽位直接引用背包物品栈）。 */
+    private int screenSlotOf(ScreenHandler handler, ItemStack stack) {
+        for (int i = 0; i < handler.slots.size(); i++) {
+            if (handler.getSlot(i).getStack() == stack) {
+                return i;
+            }
+        }
+        return -1;
+    }
+
+    /** 是否为受耐久保护的工具（镐/斧/锹/锄/剑）。 */
+    public static boolean isTool(ItemStack stack) {
+        return !stack.isEmpty() && toolKind(stack.getItem()) != null;
+    }
+
+    private static String toolKind(Item item) {
+        if (item instanceof PickaxeItem) return "pickaxe";
+        if (item instanceof AxeItem) return "axe";
+        if (item instanceof ShovelItem) return "shovel";
+        if (item instanceof HoeItem) return "hoe";
+        if (item instanceof SwordItem) return "sword";
+        return null;
+    }
+
+    private static int remaining(ItemStack stack) {
+        return stack.getMaxDamage() - stack.getDamage();
+    }
+
+    private static double durabilityPct(ItemStack stack) {
+        return stack.getMaxDamage() <= 0 ? 100.0 : (double) remaining(stack) / stack.getMaxDamage() * 100.0;
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/autodig/client/service/AutoTrash.java b/src/main/java/autodig/client/service/AutoTrash.java
new file mode 100644
index 0000000..14147a9
--- /dev/null
+++ b/src/main/java/autodig/client/service/AutoTrash.java
@@ -0,0 +1,140 @@
+package autodig.client.service;
+
+import autodig.client.config.DigConfig;
+import autodig.client.config.MineTask;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import net.minecraft.client.MinecraftClient;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.item.BlockItem;
+import net.minecraft.item.ItemStack;
+import net.minecraft.registry.Registries;
+import net.minecraft.screen.ScreenHandler;
+import net.minecraft.screen.slot.SlotActionType;
+
+/**
+ * 背包垃圾自动清理服务。
+ *
+ * <p>背包满时，把 {@code trashItems} 清单里的垃圾物品丢出背包（圆石、凝灰岩、
+ * 深板岩等挖掘副产物）。方块类垃圾保留 {@code trashReserve} 个供 Baritone
+ * 搭路/垫脚使用；若满背时额度之外没有别的垃圾可丢，则只丢一组腾出空间，
+ * 尽量保住搭路方块。丢弃通过 {@code clickSlot(THROW)} 走正规网络包，
+ * 单人/多人均可用。</p>
+ */
+public final class AutoTrash {
+
+    /** 每 tick 最多丢弃的物品组数，避免一次产生过多数据包 */
+    private static final int MAX_DROPS_PER_TICK = 4;
+
+    /** 每帧调用：背包满时自动丢弃垃圾物品。 */
+    public void tick(DigConfig config) {
+        MinecraftClient client = MinecraftClient.getInstance();
+        if (client.player == null || client.world == null || client.interactionManager == null) {
+            return;
+        }
+        if (!config.autoTrash || config.task == MineTask.NONE) {
+            return;
+        }
+        if (client.currentScreen != null) {
+            return; // 有界面（箱子/死亡界面等）打开时不操作背包
+        }
+        PlayerEntity player = client.player;
+        ScreenHandler handler = player.currentScreenHandler;
+        if (handler != player.playerScreenHandler) {
+            return;
+        }
+        if (!handler.getCursorStack().isEmpty()) {
+            return;
+        }
+        if (!this.inventoryFull(player)) {
+            return;
+        }
+        Set<String> trash = new HashSet<>(config.getTrashItemList());
+        if (trash.isEmpty()) {
+            return;
+        }
+
+        // 收集背包里的垃圾，按物品 id 分组（并记录是否为可放置的方块）
+        Map<String, List<ItemStack>> groups = new HashMap<>();
+        Map<String, Boolean> blockLike = new HashMap<>();
+        for (int i = 0; i < 36; i++) {
+            ItemStack s = player.getInventory().main.get(i);
+            if (s.isEmpty()) {
+                continue;
+            }
+            String id = this.itemId(s);
+            if (!trash.contains(id)) {
+                continue;
+            }
+            groups.computeIfAbsent(id, k -> new ArrayList<>()).add(s);
+            blockLike.putIfAbsent(id, s.getItem() instanceof BlockItem);
+        }
+        if (groups.isEmpty()) {
+            return;
+        }
+
+        // 决定丢弃哪些：方块类垃圾保留 trashReserve 个（搭路用），非方块全丢
+        List<ItemStack> drops = new ArrayList<>();
+        for (Map.Entry<String, List<ItemStack>> e : groups.entrySet()) {
+            int keep = Boolean.TRUE.equals(blockLike.get(e.getKey())) ? config.trashReserve : 0;
+            for (ItemStack s : e.getValue()) {
+                if (keep > 0) {
+                    keep -= s.getCount();
+                    continue; // 还在保留额度内
+                }
+                drops.add(s);
+            }
+        }
+        if (drops.isEmpty()) {
+            // 满背但垃圾全在保留额度内：只丢一组腾出空间，尽量保住搭路方块
+            for (List<ItemStack> list : groups.values()) {
+                if (!list.isEmpty()) {
+                    drops.add(list.get(0));
+                    break;
+                }
+            }
+        }
+
+        // 执行丢弃（每 tick 限量，剩余下 tick 继续）
+        int dropped = 0;
+        for (ItemStack s : drops) {
+            if (dropped >= MAX_DROPS_PER_TICK) {
+                break;
+            }
+            int slot = this.screenSlotOf(handler, s);
+            if (slot < 0) {
+                continue;
+            }
+            // THROW + 按钮 1 = 丢出整组
+            client.interactionManager.clickSlot(handler.syncId, slot, 1, SlotActionType.THROW, player);
+            dropped++;
+        }
+    }
+
+    private boolean inventoryFull(PlayerEntity player) {
+        for (int i = 0; i < 36; i++) {
+            if (player.getInventory().main.get(i).isEmpty()) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    /** 按对象引用在 ScreenHandler 里找槽位下标。 */
+    private int screenSlotOf(ScreenHandler handler, ItemStack stack) {
+        for (int i = 0; i < handler.slots.size(); i++) {
+            if (handler.getSlot(i).getStack() == stack) {
+                return i;
+            }
+        }
+        return -1;
+    }
+
+    private String itemId(ItemStack stack) {
+        return Registries.ITEM.getId(stack.getItem()).toString();
+    }
+}
\ No newline at end of file
diff --git a/src/main/resources/fabric.mod.json b/src/main/resources/fabric.mod.json
index a0145d6..07edc65 100644
--- a/src/main/resources/fabric.mod.json
+++ b/src/main/resources/fabric.mod.json
@@ -3,7 +3,7 @@
   "id": "autodig",
   "version": "${version}",
   "name": "AutoDig",
-  "description": "自动挖矿模组（内置 Baritone 1.13.1，无需另行安装）：主世界模式与下界模式，均可自定义目标矿物。主世界鱼骨巷道挖矿，下界自动进出传送门挖矿并支持返程。支持自动切换工具、自动进食、杀戮光环、保命优先、优先绕开岩浆、装备耐久保护、死亡重生回点。",
+  "description": "自动挖矿模组（内置 Baritone 1.13.1，无需另行安装）：主世界模式与下界模式，均可自定义目标矿物。主世界鱼骨巷道挖矿，下界自动进出传送门挖矿并支持返程。支持自动切换工具、自动进食、杀戮光环、保命优先、优先绕开岩浆、装备耐久保护（自动换备用装备）、背包满自动丢垃圾、死亡重生回点。",
   "authors": [],
   "contact": {},
   "license": "All-Rights-Reserved",