diff --git a/Assets/Scripts/Project/UI/UI_Panel/UI_PPTForPracticePanel.cs b/Assets/Scripts/Project/UI/UI_Panel/UI_PPTForPracticePanel.cs
index 3733b94..b5279b0 100644
--- a/Assets/Scripts/Project/UI/UI_Panel/UI_PPTForPracticePanel.cs
+++ b/Assets/Scripts/Project/UI/UI_Panel/UI_PPTForPracticePanel.cs
@@ -24,6 +24,8 @@ public class UI_PPTForPracticePanel : BasePanel
 
     public UI_SelectDevicePanel UI_SelectDevice;
 
+    protected bool isPPTLoading = false;
+
     protected override void Awake()
     {
         canvasGroup.alpha = 1f;
@@ -136,7 +138,9 @@ public class UI_PPTForPracticePanel : BasePanel
     }
     protected override void OnChangeToggle(string togglePath, bool isOn)
     {
+        
         base.OnChangeToggle(togglePath, isOn);
+        if (isPPTLoading) return;//PPT正在加载中，不处理其他切换
         switch (togglePath)
         {
             default:
@@ -146,6 +150,7 @@ public class UI_PPTForPracticePanel : BasePanel
                     {
                         DestroyImmediate(child.gameObject);
                     }
+                    isPPTLoading = true;
                     // 启动协程异步加载PPT
                     StartCoroutine(LoadPPTAsync(togglePath, textures =>
                     {
@@ -181,6 +186,7 @@ public class UI_PPTForPracticePanel : BasePanel
             image.texture = texture;
             image.rectTransform.sizeDelta = new Vector2(1608, 940);
         }
+        isPPTLoading = false;//完成加载
     }
 
     private void DisplaySinglePage(Texture2D texture)