diff --git a/src/frontend/src/store.ts b/src/frontend/src/store.ts
index 26195da..6b59078 100644
--- a/src/frontend/src/store.ts
+++ b/src/frontend/src/store.ts
@@ -458,7 +458,7 @@ export const useStore = create<AppStore>((set, get) => ({
       set({ projects });
       // 自动选择第一个项目
       const s = get();
-      if (!s.selectedProjectId && Object.keys(projects).length > 0) {
+      if (!s.selectedProjectId && s.selectedProjectId !== '' && Object.keys(projects).length > 0) {
         const firstPid = Object.keys(projects)[0];
         set({ selectedProjectId: firstPid });
         setApiProjectId(firstPid);
@@ -478,7 +478,7 @@ export const useStore = create<AppStore>((set, get) => ({
       set({ projects: data.projects });
       const s = get();
       // 如果当前 selectedProjectId 不在项目列表里，重新选择
-      if (!s.selectedProjectId || !(s.selectedProjectId in data.projects)) {
+      if ((!s.selectedProjectId || !(s.selectedProjectId in data.projects)) && s.selectedProjectId !== '') {
         if (Object.keys(data.projects).length > 0) {
           const firstPid = Object.keys(data.projects)[0];
           set({ selectedProjectId: firstPid });