diff --git a/Assets/_Game/Scripts/Editor/Enemies/EnemyLocomotionEditor.cs b/Assets/_Game/Scripts/Editor/Enemies/EnemyLocomotionEditor.cs
index 8c124d8b..9fc63519 100644
--- a/Assets/_Game/Scripts/Editor/Enemies/EnemyLocomotionEditor.cs
+++ b/Assets/_Game/Scripts/Editor/Enemies/EnemyLocomotionEditor.cs
@@ -30,8 +30,29 @@ namespace BaseGames.Editor
         private bool  _cachedCanReachValid;
         private float _cachedMaxSnap = -1f;
 
-        private void OnEnable()  => EditorApplication.update += ThrottledRepaint;
-        private void OnDisable() => EditorApplication.update -= ThrottledRepaint;
+        // 退出 Play 期间：Application.isPlaying 仍为 true 但 PBWorld 已销毁，此时调 CanReach 会 NRE。
+        // 收到 ExitingPlayMode 即停止一切运行时查询。
+        private bool _exitingPlay;
+        // 本帧是否绘制运行时区块——在 Layout 事件锁定、Repaint 复用，保证两趟控件数一致(否则 IMGUI 报错)。
+        private bool _drawRuntimeThisFrame;
+
+        private void OnEnable()
+        {
+            EditorApplication.update += ThrottledRepaint;
+            EditorApplication.playModeStateChanged += OnPlayModeChanged;
+        }
+
+        private void OnDisable()
+        {
+            EditorApplication.update -= ThrottledRepaint;
+            EditorApplication.playModeStateChanged -= OnPlayModeChanged;
+        }
+
+        private void OnPlayModeChanged(PlayModeStateChange s)
+        {
+            if (s == PlayModeStateChange.ExitingPlayMode) _exitingPlay = true;
+            else if (s == PlayModeStateChange.EnteredPlayMode) _exitingPlay = false;
+        }
 
         // 定频请求重绘（不在 OnInspectorGUI 里每帧 Repaint，避免绑定到游戏帧率狂刷）
         private void ThrottledRepaint()
@@ -58,7 +79,12 @@ namespace BaseGames.Editor
             }
             GUI.backgroundColor = prevBg;
 
-            if (!Application.isPlaying)
+            // 是否绘制运行时区块的判定只在 Layout 事件更新，Repaint 复用同一结果——
+            // 避免退出 Play 那一帧 isPlaying 在 Layout/Repaint 两趟间翻转导致控件数不一致而 IMGUI 报错。
+            if (Event.current.type == EventType.Layout)
+                _drawRuntimeThisFrame = Application.isPlaying && !_exitingPlay;
+
+            if (!_drawRuntimeThisFrame)
             {
                 EditorGUILayout.Space(4f);
                 EditorGUILayout.HelpBox("进入 Play 模式后此处显示实时巡逻调试信息（按钮在编辑期也可打印静态配置）。", MessageType.None);
@@ -251,8 +277,9 @@ namespace BaseGames.Editor
                     Row("到目标距离 / 到达半径", $"{dist:F2} / {loco.DebugArriveRadius:F2}{(arrived ? "  (已到达)" : "")}",
                         arrived ? Green : White);
 
-                    // CanReach 会同步阻塞寻路 → 仅限频重算并缓存
-                    if (doHeavy && nav != null)
+                    // CanReach 会同步阻塞寻路 → 仅限频重算并缓存。
+                    // 额外守卫 !_exitingPlay && isPlaying：退出 Play 那一刻 PBWorld 已销毁，此时调会 NRE。
+                    if (doHeavy && nav != null && !_exitingPlay && Application.isPlaying)
                     {
                         _cachedCanReach = nav.CanReach(goal);
                         _cachedCanReachValid = true;