diff --git a/src/Add-on/Save.ts b/src/Add-on/Save.ts
index 3bb4d35ff..14d37a6d3 100644
--- a/src/Add-on/Save.ts
+++ b/src/Add-on/Save.ts
@@ -6,18 +6,33 @@ import { deflate, GetCurrentViewPreViewImage } from '../Common/SerializeMaterial
 import { FileServer } from '../DatabaseServices/FileServer';
 import { Command } from '../Editor/CommandMachine';
 import { RightPanelStore } from '../UI/Store/RightPanelStore/RightPanelStore';
+import { appCache } from "../Common/AppCache";
 
 export class Save implements Command
 {
     async exec()
     {
-        let logo = await uploadLogo(GetCurrentViewPreViewImage());
-        if (!logo) return;
-
         let fileServer = FileServer.GetInstance() as FileServer;
 
         let fileData = app.FileOut().Data;
-        let file = deflate(JSON.stringify(fileData));
+        let file = JSON.stringify(fileData);
+
+        if (fileServer.m_CurFileId)
+        {
+            let finfo = appCache.get("f" + fileServer.m_CurFileId);
+            if (finfo && finfo.file)
+            {
+                if (finfo.file === file)
+                {
+                    app.Editor.Prompt("文件已保存!");
+                    return;
+                }
+            }
+        }
+        file = deflate(file);
+        let logo = await uploadLogo(GetCurrentViewPreViewImage());
+        if (!logo) return;
+
         if (fileServer.m_CurFileId)
         {
             await fileServer.UpdateFile({ file_id: fileServer.m_CurFileId, file, logo });
diff --git a/src/UI/Components/Panel.tsx b/src/UI/Components/Panel.tsx
index 766dd6e38..0d8a2daa3 100644
--- a/src/UI/Components/Panel.tsx
+++ b/src/UI/Components/Panel.tsx
@@ -64,10 +64,10 @@ export class TopPanel extends React.Component<{ store?: TopPanelStore }, {}>
     }
     handleLoginOut = async () =>
     {
+        this.props.store.isLogin = false;
         let data = await Post(SignUrl.loginOut);
         if (data.err_code === RequestStatus.Ok)
         {
-            this.props.store.isLogin = false;
             localStorage.removeItem(StoreageKeys.IsLogin);
         }
     }