diff --git a/frontend/app/features/platform/WorkspaceTree.tsx b/frontend/app/features/platform/WorkspaceTree.tsx
index 34e0a42..ea55323 100644
--- a/frontend/app/features/platform/WorkspaceTree.tsx
+++ b/frontend/app/features/platform/WorkspaceTree.tsx
@@ -26,11 +26,11 @@ type WorkspaceTreeProps = {
   // 唯一标识此 group（通常 `__group__<owner_user_id>`），让多个 owner 的 group 各自独立展开。
   groupKey: string;
   expandedPaths: Set<string>;
-  onToggle: (path: string) => void;
+  onToggle: (path: string, loadPath?: string) => void;
   loadingChildrenPaths: Set<string>;
 };
 
-type WorkspaceTreeItemsProps = Omit<WorkspaceTreeProps, "title" | "readOnly" | "groupKey"> & {
+type WorkspaceTreeItemsProps = Omit<WorkspaceTreeProps, "title" | "readOnly"> & {
   path: string;
   depth: number;
 };
@@ -100,6 +100,7 @@ export function WorkspaceTreeGroup({
       {open && (
         <div className="tree-group__items">
           <WorkspaceTreeItems
+            groupKey={groupKey}
             path=""
             depth={0}
             scripts={scripts}
@@ -123,6 +124,7 @@ export function WorkspaceTreeGroup({
 }
 
 function WorkspaceTreeItems({
+  groupKey,
   path,
   depth,
   scripts,
@@ -145,6 +147,7 @@ function WorkspaceTreeItems({
       {childDirectories.map((directory) => (
         <DirectoryBranch
           key={directory.path}
+          groupKey={groupKey}
           directory={directory}
           depth={depth}
           scripts={scripts}
@@ -196,6 +199,7 @@ function WorkspaceTreeItems({
 }
 
 function DirectoryBranch({
+  groupKey,
   directory,
   depth,
   scripts,
@@ -209,7 +213,8 @@ function DirectoryBranch({
 }: Omit<WorkspaceTreeItemsProps, "path"> & {
   directory: WorkspaceDirectory;
 }) {
-  const open = expandedPaths.has(directory.path);
+  const expandKey = `${groupKey}/${directory.path}`;
+  const open = expandedPaths.has(expandKey);
   const childrenLoading = loadingChildrenPaths.has(directory.path);
   return (
     <div className="directory-branch">
@@ -217,7 +222,7 @@ function DirectoryBranch({
         className="directory-row"
         style={{ paddingLeft: 10 + depth * 16 }}
         type="button"
-        onClick={() => onToggle(directory.path)}
+        onClick={() => onToggle(expandKey, directory.path)}
         onContextMenu={onContextMenu
           ? (event) => onContextMenu(event, {
             kind: "directory",
@@ -234,6 +239,7 @@ function DirectoryBranch({
       </button>
       {open && (
         <WorkspaceTreeItems
+          groupKey={groupKey}
           path={directory.path}
           depth={depth + 1}
           scripts={scripts}
diff --git a/frontend/app/features/platform/state/scriptWorkspaceStore.ts b/frontend/app/features/platform/state/scriptWorkspaceStore.ts
index 7a62e70..12be0b9 100644
--- a/frontend/app/features/platform/state/scriptWorkspaceStore.ts
+++ b/frontend/app/features/platform/state/scriptWorkspaceStore.ts
@@ -109,7 +109,7 @@ type State = {
   createFolder: (name: string, parentPath: string) => Promise<void>;
   deleteScript: (script: ScriptItem) => Promise<void>;
   deleteDirectory: (path: string) => Promise<void>;
-  toggleExpanded: (path: string) => Promise<void>;
+  toggleExpanded: (path: string, loadPath?: string) => Promise<void>;
   loadChildren: (parentPath: string) => Promise<void>;
   toggleScriptLock: (script: ScriptItem) => Promise<void>;
   openPublishDialog: (script: ScriptItem) => void;
@@ -292,7 +292,7 @@ export const useScriptWorkspaceStore = create<State>((set, get) => {
       }
     },
 
-    toggleExpanded: async (path) => {
+    toggleExpanded: async (path, loadPath) => {
       const state = get();
       const isOpen = state.expandedPaths.has(path);
       const next = new Set(state.expandedPaths);
@@ -301,8 +301,9 @@ export const useScriptWorkspaceStore = create<State>((set, get) => {
       } else {
         next.add(path);
         // group key (`__group__<owner_id>`) 不是 workspace 路径,不调 loadChildren
-        if (!path.startsWith("__group__") && !state.loadedChildPaths.has(path)) {
-          void get().loadChildren(path);
+        const actualLoadPath = loadPath ?? path;
+        if (!actualLoadPath.startsWith("__group__") && !state.loadedChildPaths.has(actualLoadPath)) {
+          void get().loadChildren(actualLoadPath);
         }
       }
       set({ expandedPaths: next });