diff --git a/src/main/java/autodig/client/miner/NetherMiner.java b/src/main/java/autodig/client/miner/NetherMiner.java
index af3df09..93c7223 100644
--- a/src/main/java/autodig/client/miner/NetherMiner.java
+++ b/src/main/java/autodig/client/miner/NetherMiner.java
@@ -118,6 +118,8 @@ public final class NetherMiner {
     /** 当前巷道方向 */
     private int dirX;
     private int dirZ;
+    /** 是否已确定过本次任务的巷道方向（首次取玩家朝向，之后沿用旋转方向） */
+    private boolean tunnelStarted;
     /** 上一次打印诊断日志的时间戳（节流） */
     private long lastLog;
     /** 上一次成功下发的目标点（避免同一目标反复重发） */
@@ -163,6 +165,9 @@ public final class NetherMiner {
         this.fullTicks = 0;
         this.plan.clear();
         this.step = 0;
+        this.dirX = 0;
+        this.dirZ = 0;
+        this.tunnelStarted = false;
         this.lastIssuedTarget = null;
         this.lastProgress = System.currentTimeMillis();
         this.bestDist = Double.MAX_VALUE;
@@ -370,13 +375,18 @@ public final class NetherMiner {
         }
     }
 
-    /** 建立一条直巷计划：以玩家水平坐标为起点，y = config.netherLevel，沿当前朝向推进。 */
+    /** 建立一条直巷计划：以玩家水平坐标为起点，y = config.netherLevel。
+     *  方向只在首次建巷道时取玩家朝向；之后（rotateAndRelocate 旋转后）沿用当前方向，
+     *  保证扫描路径是一条连续折线，不会因玩家朝向变化而重复挖同一片区域。 */
     private void initTunnel(DigConfig config, PlayerEntity player) {
-        Direction facing = player.getHorizontalFacing();
-        int axis = facing.getAxis() == Direction.Axis.X ? 0 : 1;
-        int sign = axis == 0 ? facing.getOffsetX() : facing.getOffsetZ();
-        this.dirX = axis == 0 ? sign : 0;
-        this.dirZ = axis == 0 ? 0 : sign;
+        if (!this.tunnelStarted) {
+            Direction facing = player.getHorizontalFacing();
+            int axis = facing.getAxis() == Direction.Axis.X ? 0 : 1;
+            int sign = axis == 0 ? facing.getOffsetX() : facing.getOffsetZ();
+            this.dirX = axis == 0 ? sign : 0;
+            this.dirZ = axis == 0 ? 0 : sign;
+            this.tunnelStarted = true;
+        }
         BlockPos start = new BlockPos(player.getBlockPos().getX(), config.netherLevel, player.getBlockPos().getZ());
         this.plan = new ArrayList<>();
         for (int t = 0; t <= config.netherTunnelLength; t++) {