diff --git a/app/components/home.tsx b/app/components/home.tsx
index 465ad0f1e..f069b1fc4 100644
--- a/app/components/home.tsx
+++ b/app/components/home.tsx
@@ -29,6 +29,9 @@ import { AuthPage } from "./auth";
 import { getClientConfig } from "../config/client";
 import { type ClientApi, getClientApi } from "../client/api";
 import { useAccessStore } from "../store";
+import { useSyncStore } from "../store/sync";
+import { showToast } from "./ui-lib";
+import Locale from "@/app/locales";
 
 export function Loading(props: { noLogo?: boolean }) {
   return (
@@ -149,6 +152,40 @@ export function WindowContent(props: { children: React.ReactNode }) {
   );
 }
 
+function useSyncOnStart() {
+  const syncStore = useSyncStore();
+  const storeHasHydrated = useSyncStore((s) => s._hasHydrated);
+  useEffect(() => {
+    let running = true;
+    setTimeout(async () => {
+      if (
+        !(
+          storeHasHydrated &&
+          running &&
+          syncStore.cloudSync() &&
+          syncStore.autoSync.onStart
+        )
+      ) {
+        return;
+      }
+      const dismissSyncingToast = showToast(Locale.Settings.Sync.IsSyncing);
+      try {
+        await syncStore.sync();
+        dismissSyncingToast();
+        showToast(Locale.Settings.Sync.Success);
+      } catch (e: unknown) {
+        dismissSyncingToast();
+        showToast(Locale.Settings.Sync.Fail);
+        console.error("[Sync]", e);
+      }
+    });
+    return () => {
+      running = false;
+    };
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [storeHasHydrated]);
+}
+
 function Screen() {
   const config = useAppConfig();
   const location = useLocation();
@@ -165,6 +202,7 @@ function Screen() {
   useEffect(() => {
     loadAsyncGoogleFont();
   }, []);
+  useSyncOnStart();
 
   if (isArtifact) {
     return (
diff --git a/app/components/settings.tsx b/app/components/settings.tsx
index e2666b551..c44b4a7e2 100644
--- a/app/components/settings.tsx
+++ b/app/components/settings.tsx
@@ -477,6 +477,21 @@ function SyncConfigModal(props: { onClose?: () => void }) {
             </ListItem>
           </List>
         )}
+
+        <List>
+          <ListItem title={Locale.Settings.Sync.Config.AutoSync.OnStartup}>
+            <input
+              type="checkbox"
+              checked={syncStore.autoSync.onStart}
+              onChange={(e) => {
+                syncStore.update(
+                  (config) =>
+                    (config.autoSync.onStart = e.currentTarget.checked),
+                );
+              }}
+            />
+          </ListItem>
+        </List>
       </Modal>
     </div>
   );
diff --git a/app/components/ui-lib.tsx b/app/components/ui-lib.tsx
index 4af37dbba..5d52bef59 100644
--- a/app/components/ui-lib.tsx
+++ b/app/components/ui-lib.tsx
@@ -229,13 +229,19 @@ export function showToast(
   content: string,
   action?: ToastProps["action"],
   delay = 3000,
-) {
+): () => void {
   const div = document.createElement("div");
   div.className = styles.show;
   document.body.appendChild(div);
 
   const root = createRoot(div);
+  let closeCalled = false;
   const close = () => {
+    if (closeCalled) {
+      return;
+    } else {
+      closeCalled = true;
+    }
     div.classList.add(styles.hide);
 
     setTimeout(() => {
@@ -249,6 +255,8 @@ export function showToast(
   }, delay);
 
   root.render(<Toast content={content} action={action} onClose={close} />);
+
+  return close;
 }
 
 export type InputProps = React.HTMLProps<HTMLTextAreaElement> & {
diff --git a/app/locales/cn.ts b/app/locales/cn.ts
index 9712593c6..7e8892e71 100644
--- a/app/locales/cn.ts
+++ b/app/locales/cn.ts
@@ -223,6 +223,7 @@ const cn = {
       CloudState: "云端数据",
       NotSyncYet: "还没有进行过同步",
       Success: "同步成功",
+      IsSyncing: "正在同步...",
       Fail: "同步失败",
 
       Config: {
@@ -254,6 +255,10 @@ const cn = {
           UserName: "备份名称",
           Password: "UpStash Redis REST Token",
         },
+
+        AutoSync: {
+          OnStartup: "启动时自动同步",
+        },
       },
 
       LocalState: "本地数据",
diff --git a/app/locales/en.ts b/app/locales/en.ts
index ac8d3aed2..d4fe441ea 100644
--- a/app/locales/en.ts
+++ b/app/locales/en.ts
@@ -225,6 +225,7 @@ const en: LocaleType = {
       CloudState: "Last Update",
       NotSyncYet: "Not sync yet",
       Success: "Sync Success",
+      IsSyncing: "Sync in progress...",
       Fail: "Sync Fail",
 
       Config: {
@@ -257,6 +258,10 @@ const en: LocaleType = {
           UserName: "Backup Name",
           Password: "UpStash Redis REST Token",
         },
+
+        AutoSync: {
+          OnStartup: "Sync on startup",
+        },
       },
 
       LocalState: "Local Data",
diff --git a/app/store/sync.ts b/app/store/sync.ts
index 8477c1e4b..c297699df 100644
--- a/app/store/sync.ts
+++ b/app/store/sync.ts
@@ -27,18 +27,22 @@ const DEFAULT_SYNC_STATE = {
   useProxy: true,
   proxyUrl: ApiPath.Cors as string,
 
-  webdav: {
+  [ProviderType.WebDAV]: {
     endpoint: "",
     username: "",
     password: "",
   },
 
-  upstash: {
+  [ProviderType.UpStash]: {
     endpoint: "",
     username: STORAGE_KEY,
     apiKey: "",
   },
 
+  autoSync: {
+    onStart: false,
+  },
+
   lastSyncTime: 0,
   lastProvider: "",
 };
@@ -46,9 +50,14 @@ const DEFAULT_SYNC_STATE = {
 export const useSyncStore = createPersistStore(
   DEFAULT_SYNC_STATE,
   (set, get) => ({
-    cloudSync() {
+    cloudSync(): boolean {
       const config = get()[get().provider];
-      return Object.values(config).every((c) => c.toString().length > 0);
+      if (!config) {
+        return false;
+      }
+      return Object.values(config).every(
+        (c) => c != null && c.toString().length > 0,
+      );
     },
 
     markSyncTime() {
@@ -126,7 +135,7 @@ export const useSyncStore = createPersistStore(
   }),
   {
     name: StoreKey.Sync,
-    version: 1.2,
+    version: 1.3,
 
     migrate(persistedState, version) {
       const newState = persistedState as typeof DEFAULT_SYNC_STATE;
@@ -144,6 +153,10 @@ export const useSyncStore = createPersistStore(
         }
       }
 
+      if (version < 1.3) {
+        newState.autoSync = { ...DEFAULT_SYNC_STATE.autoSync };
+      }
+
       return newState as any;
     },
   },