diff --git a/src/app/chat/chat-screen.tsx b/src/app/chat/chat-screen.tsx
index 6e235053..f592f12a 100644
--- a/src/app/chat/chat-screen.tsx
+++ b/src/app/chat/chat-screen.tsx
@@ -19,12 +19,14 @@
  */
 import { useEffect, useRef } from "react";
 import Image from "next/image";
+import { useRouter } from "next/navigation";
 
 import { useAuthState } from "@/stores/auth/auth-context";
 import type { LoginStatus } from "@/data/dto/auth";
 import { AuthStorage } from "@/data/storage/auth/auth_storage";
 import { useChatDispatch, useChatState } from "@/stores/chat/chat-context";
 import { AppEnvUtil } from "@/utils/app-env";
+import { ROUTES } from "@/router/routes";
 
 import { MobileShell } from "@/app/_components/core";
 
@@ -75,6 +77,7 @@ function dispatchAuthLifecycle(
 }
 
 export function ChatScreen() {
+  const router = useRouter();
   const state = useChatState();
   const authState = useAuthState();
   const chatDispatch = useChatDispatch();
@@ -91,37 +94,36 @@ export function ChatScreen() {
   const showExhaustedBanner =
     isGuest && state.quotaLoaded && state.quotaExceededTrigger > 0;
 
-
-
   // ─────────────────────────────────────────────────────────────
-  // 屏幕生命周期 + 派初次鉴权生命周期事件
-  // ─────────────────────────────────────────────────────────────
-  useEffect(() => {
-    dispatchAuthLifecycle(authState.loginStatus, chatDispatch);
-    return () => {
-    };
-    // 注：mount useEffect 故意不依赖 loginStatus —— 首次 mount 时机是固定的
-    //     （"用户进 /chat 那一刻"），loginStatus 由 splash/auth-screen 提前 settle。
-    //     loginStatus 后续变化由下方"副作用 ②" 统一处理。
-    // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [chatDispatch]);
-
-  // ─────────────────────────────────────────────────────────────
-  // 副作用 ②：loginStatus 变化 → 派对应鉴权生命周期事件
+  // loginStatus 变化 → 派对应鉴权生命周期事件
   //
   // 规则：
-  //   - 首次 mount（prev === null）→ 由 mount useEffect 统一处理
-  //   - "notLoggedIn" → 派 ChatLogout
+  //   - AuthInit 未完成 → 等，避免初始 notLoggedIn 把 /chat 变成死状态
+  //   - AuthInit 完成后仍 "notLoggedIn" → 清 chat 并回 splash
   //   - 登录态变化（guest→email 等）→ 派 ChatGuestLogin 或 ChatNonGuestLogin
   // ─────────────────────────────────────────────────────────────
   const prevLoginStatusRef = useRef<LoginStatus | null>(null);
   useEffect(() => {
+    if (!authState.hasInitialized || authState.isLoading) return;
+
     const prev = prevLoginStatusRef.current;
-    prevLoginStatusRef.current = authState.loginStatus;
-    if (prev === null) return; // 首次 mount 由 mount useEffect 处理
     if (prev === authState.loginStatus) return; // 登录态没变
+    prevLoginStatusRef.current = authState.loginStatus;
+
+    if (authState.loginStatus === "notLoggedIn") {
+      chatDispatch({ type: "ChatLogout" });
+      router.replace(ROUTES.splash);
+      return;
+    }
+
     dispatchAuthLifecycle(authState.loginStatus, chatDispatch);
-  }, [authState.loginStatus, chatDispatch]);
+  }, [
+    authState.hasInitialized,
+    authState.isLoading,
+    authState.loginStatus,
+    chatDispatch,
+    router,
+  ]);
 
   return (
     <MobileShell>
diff --git a/src/stores/auth/auth-context.tsx b/src/stores/auth/auth-context.tsx
index 89128ec7..88b85f5f 100644
--- a/src/stores/auth/auth-context.tsx
+++ b/src/stores/auth/auth-context.tsx
@@ -34,6 +34,8 @@ interface AuthState {
   errorMessage: string | null;
   /** 当前登录状态（未登录 / 游客 / OAuth / 邮箱） */
   loginStatus: MachineContext["loginStatus"];
+  /** 启动时的本地登录态恢复是否已经完成 */
+  hasInitialized: MachineContext["hasInitialized"];
   /**
    * 一次性的"刚按了"信号 —— Skip / Facebook / 邮箱登录按钮派完业务事件后置 true，
    * splash-screen / auth-screen 看到 `pendingRedirect && loginStatus !== "notLoggedIn"`
@@ -67,12 +69,14 @@ export function AuthProvider({ children }: AuthProviderProps) {
         state.matches("loadingEmailLogin") ||
         state.matches("loadingEmailRegister") ||
         state.matches("loadingOAuth") ||
+        state.matches("initializing") ||
         state.matches("loggingOut") ||
         state.matches("syncingGoogleBackend") ||
         state.matches("syncingFacebookBackend") ||
         state.matches("loadingGuestLogin"),
       errorMessage: state.context.errorMessage,
       loginStatus: state.context.loginStatus,
+      hasInitialized: state.context.hasInitialized,
       pendingRedirect: state.context.pendingRedirect,
     }),
     [state],
diff --git a/src/stores/auth/auth-machine.ts b/src/stores/auth/auth-machine.ts
index 9501502b..147d9df1 100644
--- a/src/stores/auth/auth-machine.ts
+++ b/src/stores/auth/auth-machine.ts
@@ -111,6 +111,7 @@ export const authMachine = setup({
           target: "idle", // ← init 完回 idle（从 storage 拿到 loginStatus 后落地）
           actions: assign({
             loginStatus: ({ event }) => event.output,
+            hasInitialized: true,
             // 不置 pendingRedirect —— 状态查询是被动读 token，不算"用户意图"
             errorMessage: null,
           }),
@@ -120,6 +121,7 @@ export const authMachine = setup({
           actions: assign({
             errorMessage: ({ event }) =>
               event.error instanceof Error ? event.error.message : String(event.error),
+            hasInitialized: true,
           }),
         },
       },
@@ -137,6 +139,7 @@ export const authMachine = setup({
             // Skip 点击后已在 splash 里立即跳 /chat；guest login 不再依赖 pendingRedirect。
             pendingRedirect: false,
             errorMessage: null,
+            hasInitialized: true,
           }),
         },
         onError: {
@@ -144,6 +147,7 @@ export const authMachine = setup({
           actions: assign({
             errorMessage: ({ event }) =>
               event.error instanceof Error ? event.error.message : String(event.error),
+            hasInitialized: true,
           }),
         },
       },
@@ -164,6 +168,7 @@ export const authMachine = setup({
             loginStatus: ({ event }) => event.output,
             pendingRedirect: true, // ← 邮箱登录成功 → 跳
             errorMessage: null,
+            hasInitialized: true,
           }),
         },
         onError: {
@@ -171,6 +176,7 @@ export const authMachine = setup({
           actions: assign({
             errorMessage: ({ event }) =>
               event.error instanceof Error ? event.error.message : String(event.error),
+            hasInitialized: true,
           }),
         },
       },
@@ -196,6 +202,7 @@ export const authMachine = setup({
             loginStatus: ({ event }) => event.output,
             pendingRedirect: true, // ← 注册成功 → 跳
             errorMessage: null,
+            hasInitialized: true,
           }),
         },
         onError: {
@@ -203,6 +210,7 @@ export const authMachine = setup({
           actions: assign({
             errorMessage: ({ event }) =>
               event.error instanceof Error ? event.error.message : String(event.error),
+            hasInitialized: true,
           }),
         },
       },
@@ -236,12 +244,16 @@ export const authMachine = setup({
         src: "logout",
         onDone: {
           target: "idle",
-          actions: assign(() => initialState),
+          actions: assign(() => ({
+            ...initialState,
+            hasInitialized: true,
+          })),
         },
         onError: {
           target: "idle",
           actions: assign(({ event }) => ({
             ...initialState,
+            hasInitialized: true,
             errorMessage:
               event.error instanceof Error ? event.error.message : String(event.error),
           })),
@@ -263,6 +275,7 @@ export const authMachine = setup({
             loginStatus: ({ event }) => event.output,
             pendingRedirect: true, // ← OAuth sync 成功 → 跳
             errorMessage: null,
+            hasInitialized: true,
           }),
         },
         onError: {
@@ -270,6 +283,7 @@ export const authMachine = setup({
           actions: assign({
             errorMessage: ({ event }) =>
               event.error instanceof Error ? event.error.message : String(event.error),
+            hasInitialized: true,
           }),
         },
       },
@@ -289,6 +303,7 @@ export const authMachine = setup({
             loginStatus: ({ event }) => event.output,
             pendingRedirect: true, // ← OAuth sync 成功 → 跳
             errorMessage: null,
+            hasInitialized: true,
           }),
         },
         onError: {
@@ -296,6 +311,7 @@ export const authMachine = setup({
           actions: assign({
             errorMessage: ({ event }) =>
               event.error instanceof Error ? event.error.message : String(event.error),
+            hasInitialized: true,
           }),
         },
       },
diff --git a/src/stores/auth/auth-state.ts b/src/stores/auth/auth-state.ts
index 80eb8471..84397bc1 100644
--- a/src/stores/auth/auth-state.ts
+++ b/src/stores/auth/auth-state.ts
@@ -15,6 +15,8 @@ export interface AuthState {
   errorMessage: string | null;
   /** 当前登录状态（未登录 / 游客 / OAuth / 邮箱） */
   loginStatus: LoginStatus;
+  /** 启动时的本地登录态恢复是否已经完成 */
+  hasInitialized: boolean;
   /**
    * 一次性的"刚按了"信号 —— Skip / Facebook / 邮箱登录按钮刚派事件 → 置 true
    *   → splash-screen / auth-screen 看到 `pendingRedirect && loginStatus !== "notLoggedIn"` 触发跳转
@@ -35,5 +37,6 @@ export const initialState: AuthState = {
   confirmPassword: "",
   errorMessage: null,
   loginStatus: "notLoggedIn",
+  hasInitialized: false,
   pendingRedirect: false,
 };