diff --git a/Assets/Scripts/Interaction/PingClickHandler.cs b/Assets/Scripts/Interaction/PingClickHandler.cs
index 846a1ed..55437d3 100644
--- a/Assets/Scripts/Interaction/PingClickHandler.cs
+++ b/Assets/Scripts/Interaction/PingClickHandler.cs
@@ -14,6 +14,7 @@ public class PingClickHandler : MonoBehaviour
 
     private MeshRenderer _meshRenderer;
     private LineRenderer _outlineRenderer;
+    private static int _firstClickCount = 0;
     private bool _clickedOnce;
 
     void Start()
@@ -75,39 +76,34 @@ public class PingClickHandler : MonoBehaviour
 
     void OnMouseDown()
     {
-        if (!_clickedOnce)
+        // 阶段 0：4个ping依次首次点击（只显示模型）
+        if (_firstClickCount < 4)
         {
-            // 第一次点击：停止闪烁，显示模型
+            if (_clickedOnce) return;
             _clickedOnce = true;
+            _firstClickCount++;
             StopAllCoroutines();
             if (_meshRenderer != null) _meshRenderer.enabled = true;
             if (_outlineRenderer != null) _outlineRenderer.enabled = true;
-            Debug.Log($"[PingClick] {name} 第一次点击，模型显示");
+            // 激活下个 ping
+            if (nextPing != null) { nextPing.SetActive(true); Debug.Log($"[PingClick] {name} → {nextPing.name} 激活"); }
+            Debug.Log($"[PingClick] {name} 第1击 (model显示, {_firstClickCount}/4)");
+            var sm = FindObjectOfType<StepManager>();
+            if (sm != null) sm.RecordPingStep(pingIndex, false);
         }
+        // 阶段 1：4个全部首次点击后，第二击显示chanrao
         else
         {
-            // 第二次点击：显示 chanrao，隐藏自己，激活下个 ping
-            if (chanraoObject != null)
-            {
-                chanraoObject.SetActive(true);
-                Debug.Log($"[PingClick] {chanraoObject.name} 已显示");
-            }
-
+            if (!_clickedOnce) return;
+            if (chanraoObject != null) { chanraoObject.SetActive(true); Debug.Log($"[PingClick] {chanraoObject.name} 已显示"); }
             StopAllCoroutines();
             if (_meshRenderer != null) _meshRenderer.enabled = false;
             if (_outlineRenderer != null) _outlineRenderer.enabled = false;
             gameObject.SetActive(false);
-
-            if (nextPing != null)
-            {
-                nextPing.SetActive(true);
-                Debug.Log($"[PingClick] {name} → {nextPing.name} 已激活");
-            }
+            Debug.Log($"[PingClick] {name} 第2击 (chanrao显示)");
+            var sm = FindObjectOfType<StepManager>();
+            if (sm != null) sm.RecordPingStep(pingIndex, true);
         }
-
-        // 通知 StepManager
-        var sm = FindObjectOfType<StepManager>();
-        if (sm != null) sm.RecordPingStep(pingIndex, _clickedOnce);
     }
 
     /// <summary>上一步撤销：恢复到first-click状态</summary>
@@ -115,6 +111,7 @@ public class PingClickHandler : MonoBehaviour
     {
         if (!_clickedOnce) return;
         _clickedOnce = false;
+        _firstClickCount--;
         gameObject.SetActive(true);
         if (_meshRenderer != null) _meshRenderer.enabled = false;
         StopAllCoroutines();