diff --git a/src/main/java/nukkitcoders/mobplugin/entities/WalkingEntity.java b/src/main/java/nukkitcoders/mobplugin/entities/WalkingEntity.java
index f3ef0c7b5..56c484dbb 100644
--- a/src/main/java/nukkitcoders/mobplugin/entities/WalkingEntity.java
+++ b/src/main/java/nukkitcoders/mobplugin/entities/WalkingEntity.java
@@ -3,8 +3,10 @@
 import cn.nukkit.block.*;
 import cn.nukkit.entity.Entity;
 import cn.nukkit.entity.EntityCreature;
+import cn.nukkit.level.Location;
 import cn.nukkit.level.format.FullChunk;
 import cn.nukkit.level.particle.BubbleParticle;
+import cn.nukkit.level.particle.DestroyBlockParticle;
 import cn.nukkit.math.NukkitMath;
 import cn.nukkit.math.Vector2;
 import cn.nukkit.math.Vector3;
@@ -73,20 +75,50 @@ protected void checkTarget() {
             if (Utils.rand(1, 100) > 5) {
                 return;
             }
-            x = Utils.rand(10, 30);
-            z = Utils.rand(10, 30);
-            this.target = this.add(Utils.rand() ? x : -x, Utils.rand(-20.0, 20.0) / 10, Utils.rand() ? z : -z);
+            x = Utils.rand(1, 3);
+            z = Utils.rand(1, 3);
+            Location tempLoc = this.add(Utils.rand() ? x : -x, Utils.rand(-20.0, 20.0) / 10, Utils.rand() ? z : -z);
+            if(route!=null){
+                route.setDestination(tempLoc);
+                route.research();
+                if(!route.isReachable()){
+                    route.resetNodes();
+                    target = this.getLocation();
+                }
+            }
+            //System.out.println("cc"+this.getLocation()+route.nodes+route.isReachable()+route.hasNext());
+            //level.addParticle(new DestroyBlockParticle(tempLoc,Block.get(Block.DIAMOND_BLOCK)));
         } else if (Utils.rand(1, 100) == 1) {
-            x = Utils.rand(10, 30);
-            z = Utils.rand(10, 30);
+            x = Utils.rand(1, 3);
+            z = Utils.rand(1, 3);
             this.stayTime = Utils.rand(100, 200);
-            this.target = this.add(Utils.rand() ? x : -x, Utils.rand(-20.0, 20.0) / 10, Utils.rand() ? z : -z);
+            Location tempLoc = this.add(Utils.rand() ? x : -x, Utils.rand(-20.0, 20.0) / 10, Utils.rand() ? z : -z);
+            if(route!=null){
+                route.setDestination(tempLoc);
+                route.research();
+                if(!route.isReachable()){
+                    route.resetNodes();
+                    target = this.getLocation();
+                }
+            }
+            //System.out.println("dd"+this.getLocation()+route.nodes+route.isReachable()+route.hasNext());
+            //level.addParticle(new DestroyBlockParticle(tempLoc,Block.get(Block.DIAMOND_BLOCK)));
         } else if (this.moveTime <= 0 || this.target == null) {
-            x = Utils.rand(20, 100);
-            z = Utils.rand(20, 100);
+            x = Utils.rand(2, 10);
+            z = Utils.rand(2, 10);
             this.stayTime = 0;
-            this.moveTime = Utils.rand(100, 200);
-            this.target = this.add(Utils.rand() ? x : -x, 0, Utils.rand() ? z : -z);
+            this.moveTime = Utils.rand(300, 1200);
+            Location tempLoc = this.add(Utils.rand() ? x : -x, 0, Utils.rand() ? z : -z);
+            if(route!=null){
+                route.setDestination(tempLoc);
+                route.research();
+                if(!route.isReachable()){
+                    route.resetNodes();
+                    target = this.getLocation();
+                }
+            }
+            //System.out.println("ee"+this.getLocation()+route.nodes+route.isReachable()+route.hasNext());
+            //level.addParticle(new DestroyBlockParticle(tempLoc,Block.get(Block.DIAMOND_BLOCK)));
         }
     }
 
@@ -134,7 +166,9 @@ public Vector3 updateMove(int tickDiff) {
             }
 
             if (this.age % 10 == 0 && this.route != null && !this.route.isSearching()) {
-                RouteFinderThreadPool.executeRouteFinderThread(new RouteFinderSearchTask(this.route));
+                if(followTarget != null) {
+                    RouteFinderThreadPool.executeRouteFinderThread(new RouteFinderSearchTask(this.route));
+                }
                 if (this.route.hasNext()) {
                     this.target = this.route.next();
                 }
diff --git a/src/main/java/nukkitcoders/mobplugin/route/RouteFinder.java b/src/main/java/nukkitcoders/mobplugin/route/RouteFinder.java
index d32ae13c4..27a284714 100644
--- a/src/main/java/nukkitcoders/mobplugin/route/RouteFinder.java
+++ b/src/main/java/nukkitcoders/mobplugin/route/RouteFinder.java
@@ -143,7 +143,7 @@ public void resetNodes() {
             this.nodes.clear();
             this.current = 0;
             this.interrupt = false;
-            this.destination = null;
+            //this.destination = null;
         }finally {
             this.lock.writeLock().unlock();
         }
@@ -153,7 +153,7 @@ public void resetNodes() {
 
     public void research() {
         this.resetNodes();
-        this.search();
+        this.reachable = this.search();
     }
 
     public boolean hasNext() {
@@ -177,7 +177,11 @@ public boolean isInterrupted() {
         return this.interrupt;
     }
 
-    public boolean interrupt() {
-        return this.interrupt ^= true;
+    public void interrupt() {
+        this.setInterrupt(true);
+    }
+
+    public void setInterrupt(boolean interrupt){
+        this.interrupt = interrupt;
     }
 }
diff --git a/src/main/java/nukkitcoders/mobplugin/route/WalkerRouteFinder.java b/src/main/java/nukkitcoders/mobplugin/route/WalkerRouteFinder.java
index 273e2bb7c..555983f72 100644
--- a/src/main/java/nukkitcoders/mobplugin/route/WalkerRouteFinder.java
+++ b/src/main/java/nukkitcoders/mobplugin/route/WalkerRouteFinder.java
@@ -1,6 +1,9 @@
 package nukkitcoders.mobplugin.route;
 
 import cn.nukkit.block.Block;
+import cn.nukkit.event.block.BlockBreakEvent;
+import cn.nukkit.item.Item;
+import cn.nukkit.level.particle.ItemBreakParticle;
 import cn.nukkit.math.AxisAlignedBB;
 import cn.nukkit.math.SimpleAxisAlignedBB;
 import cn.nukkit.math.Vector3;
@@ -9,6 +12,7 @@
 
 import java.util.ArrayList;
 import java.util.Collections;
+import java.util.List;
 import java.util.PriorityQueue;
 
 /**
@@ -87,7 +91,6 @@ public boolean search() {
             } else {
                 this.searching = false;
                 this.finished = true;
-                this.reachable = false;
                 this.addNode(new Node(destination));
                 return false;
             }
@@ -331,7 +334,7 @@ private boolean hasBarrier(Vector3 pos1, Vector3 pos2) {
         if (traverseDirection) {
             double loopStart = Math.min(pos1.getX(), pos2.getX());
             double loopEnd = Math.max(pos1.getX(), pos2.getX());
-            ArrayList<Vector3> list = new ArrayList<>();
+            List<Vector3> list = new ArrayList<>();
             for (double i = Math.ceil(loopStart); i <= Math.floor(loopEnd); i += 1.0) {
                 double result;
                 if ((result = Utils.calLinearFunction(pos1, pos2, i, Utils.ACCORDING_X_OBTAIN_Y)) != Double.MAX_VALUE)
@@ -341,7 +344,7 @@ private boolean hasBarrier(Vector3 pos1, Vector3 pos2) {
         } else {
             double loopStart = Math.min(pos1.getZ(), pos2.getZ());
             double loopEnd = Math.max(pos1.getZ(), pos2.getZ());
-            ArrayList<Vector3> list = new ArrayList<>();
+            List<Vector3> list = new ArrayList<>();
             for (double i = Math.ceil(loopStart); i <= Math.floor(loopEnd); i += 1.0) {
                 double result;
                 if ((result = Utils.calLinearFunction(pos1, pos2, i, Utils.ACCORDING_Y_OBTAIN_X)) != Double.MAX_VALUE)
@@ -354,7 +357,7 @@ private boolean hasBarrier(Vector3 pos1, Vector3 pos2) {
     }
 
 
-    private boolean hasBlocksAround(ArrayList<Vector3> list) {
+    private boolean hasBlocksAround(List<Vector3> list) {
         double radius = (this.entity.getWidth() * this.entity.getScale()) / 2 + 0.1;
         double height = this.entity.getHeight() * this.entity.getScale();
         for (Vector3 vector3 : list) {