diff --git a/admin/dashboard/blueprints/robot.py b/admin/dashboard/blueprints/robot.py
index cf46766..652b134 100644
--- a/admin/dashboard/blueprints/robot.py
+++ b/admin/dashboard/blueprints/robot.py
@@ -476,6 +476,61 @@ def api_login_qr_status():
         return jsonify({"success": False, "error": str(e)}), 500
 
 
+@robot_bp.route('/api/login_qr_mode', methods=['POST'])
+@login_required
+def api_switch_login_qr_mode():
+    """切换 864 登录二维码模式，并重启登录流程。"""
+    try:
+        server = current_app.dashboard_server
+        robot = getattr(server, "robot", None)
+        if robot is None:
+            return jsonify({"success": False, "error": "机器人实例不可用"}), 500
+
+        payload = request.get_json(silent=True) or {}
+        login_qr_api = str(payload.get("login_qr_api", "") or "").strip()
+        login_way = str(payload.get("login_way", "") or "").strip()
+        result = robot.switch_server_864_login_entry(
+            login_qr_api=login_qr_api,
+            login_way=login_way or None,
+            do_logout=True,
+        )
+        return jsonify({
+            "success": True,
+            "message": "864 登录二维码模式已切换，新的登录线程正在启动",
+            "data": {
+                **result,
+                "login_qr_state": _serialize_login_qr_state(server),
+            },
+        })
+    except Exception as e:
+        LOG.error(f"切换 864 登录二维码模式失败: {e}")
+        return jsonify({"success": False, "error": str(e)}), 500
+
+
+@robot_bp.route('/api/logout_864', methods=['POST'])
+@login_required
+def api_logout_864():
+    """退出当前 864 登录态，并重新进入二维码登录引导。"""
+    try:
+        server = current_app.dashboard_server
+        robot = getattr(server, "robot", None)
+        if robot is None:
+            return jsonify({"success": False, "error": "机器人实例不可用"}), 500
+
+        result = robot.logout_server_864_and_restart_login()
+        return jsonify({
+            "success": True,
+            "message": "864 已退出当前登录态，新的二维码登录流程正在启动",
+            "data": {
+                **result,
+                "login_qr_state": _serialize_login_qr_state(server),
+            },
+        })
+    except Exception as e:
+        LOG.error(f"退出 864 登录态失败: {e}")
+        return jsonify({"success": False, "error": str(e)}), 500
+
+
 # API路由
 @robot_bp.route('/api/groups')
 @login_required
diff --git a/admin/dashboard/templates/index.html b/admin/dashboard/templates/index.html
index f71002d..31a353c 100644
--- a/admin/dashboard/templates/index.html
+++ b/admin/dashboard/templates/index.html
@@ -187,6 +187,28 @@
                     </div>
                     <div class="login-qr-dialog__actions">
                         <el-button size="mini" @click="loadLoginQrStatus(true)">立即刷新状态</el-button>
+                        <el-button
+                            v-if="isServer864Login"
+                            size="mini"
+                            :loading="loginQrActionLoading === 'harmony_api'"
+                            @click="switch864LoginMode('harmony_api', 'harmony')">
+                            鸿蒙二维码
+                        </el-button>
+                        <el-button
+                            v-if="isServer864Login"
+                            size="mini"
+                            :loading="loginQrActionLoading === 'new'"
+                            @click="switch864LoginMode('new')">
+                            标准New二维码
+                        </el-button>
+                        <el-button
+                            v-if="isServer864Login"
+                            size="mini"
+                            type="danger"
+                            :loading="loginQrActionLoading === 'logout_864'"
+                            @click="logout864Login">
+                            退出864登录
+                        </el-button>
                         <el-button v-if="loginQrCurrent.scan_url" type="text" @click="copyLoginQrScanUrl">
                             复制扫码链接
                         </el-button>
@@ -586,6 +608,7 @@
                     server_now: 0
                 },
                 loginQrCountdownSeconds: 0,
+                loginQrActionLoading: '',
                 groups: [],
                 selectedGroupForHourlyTrend: '',
                 hourlyTrendDays: 1,
@@ -622,6 +645,10 @@
             loginQrCurrent() {
                 return this.loginQrDialog.current || {};
             },
+            isServer864Login() {
+                const providerName = String(this.loginQrDialog.provider_name || '').trim().toLowerCase();
+                return providerName === 'server_864' || providerName === '864';
+            },
             showLoginQrBanner() {
                 return !this.loginQrDialog.logged_in;
             },
@@ -971,6 +998,63 @@
                         this.loginQrDialog.loading = false;
                     });
             },
+            switch864LoginMode(loginQrApi, loginWay = '') {
+                if (!this.isServer864Login) {
+                    this.$message.warning('当前不是 864 登录模式，暂不支持切换二维码入口');
+                    return;
+                }
+                this.loginQrActionLoading = loginQrApi;
+                axios.post('/robot/api/login_qr_mode', {
+                    login_qr_api: loginQrApi,
+                    login_way: loginWay
+                })
+                    .then(response => {
+                        if (response.data.success) {
+                            const state = (((response.data || {}).data || {}).login_qr_state) || {};
+                            if (state && Object.keys(state).length > 0) {
+                                this.applyLoginQrState(state);
+                            }
+                            this.$message.success(response.data.message || '864 登录二维码入口已切换');
+                            setTimeout(() => this.loadLoginQrStatus(true), 1200);
+                            return;
+                        }
+                        this.$message.error(response.data.error || '切换 864 登录二维码入口失败');
+                    })
+                    .catch(error => {
+                        const errorMessage = (((error || {}).response || {}).data || {}).error || '切换 864 登录二维码入口失败';
+                        this.$message.error(errorMessage);
+                    })
+                    .finally(() => {
+                        this.loginQrActionLoading = '';
+                    });
+            },
+            logout864Login() {
+                if (!this.isServer864Login) {
+                    this.$message.warning('当前不是 864 登录模式，暂不支持此操作');
+                    return;
+                }
+                this.loginQrActionLoading = 'logout_864';
+                axios.post('/robot/api/logout_864')
+                    .then(response => {
+                        if (response.data.success) {
+                            const state = (((response.data || {}).data || {}).login_qr_state) || {};
+                            if (state && Object.keys(state).length > 0) {
+                                this.applyLoginQrState(state);
+                            }
+                            this.$message.success(response.data.message || '864 已退出当前登录态');
+                            setTimeout(() => this.loadLoginQrStatus(true), 1200);
+                            return;
+                        }
+                        this.$message.error(response.data.error || '退出 864 登录态失败');
+                    })
+                    .catch(error => {
+                        const errorMessage = (((error || {}).response || {}).data || {}).error || '退出 864 登录态失败';
+                        this.$message.error(errorMessage);
+                    })
+                    .finally(() => {
+                        this.loginQrActionLoading = '';
+                    });
+            },
             tickLoginQrCountdown() {
                 if (this.loginQrDialog.logged_in) {
                     this.loginQrCountdownSeconds = 0;
diff --git a/robot.py b/robot.py
index b2a761e..0b5b022 100644
--- a/robot.py
+++ b/robot.py
@@ -927,9 +927,106 @@ class Robot:
         if hasattr(self, "ipad_bot") and self.ipad_bot and hasattr(self.ipad_bot, "stop_runtime"):
             self.ipad_bot.stop_runtime()
         if self.ipad_loop:
-            self.ipad_loop.stop()
+            try:
+                # 事件循环运行在独立线程里，主线程这里需要走线程安全停止：
+                # 1. 直接 `loop.stop()` 在某些时机会留下竞态，导致旧线程迟迟不退出；
+                # 2. Dashboard 现在需要支持“不重启主进程，直接切换 864 登录模式”；
+                # 3. 因此这里改成 `call_soon_threadsafe`，让旧 provider 能更稳地收尾退出。
+                self.ipad_loop.call_soon_threadsafe(self.ipad_loop.stop)
+            except Exception:
+                self.ipad_loop.stop()
+        if self.ipad_thread and self.ipad_thread.is_alive():
+            self.ipad_thread.join(timeout=5)
+        self.ipad_thread = None
+        self.ipad_loop = None
+        self.ipad_bot = None
         self.LOG.info("wechat_ipad客户端已停止")
 
+    def switch_server_864_login_entry(self, *, login_qr_api: str, login_way: str | None = None, do_logout: bool = True) -> dict:
+        """切换 864 登录入口并重启登录流程。
+
+        设计说明：
+        1. 用户希望在后台直接切换“鸿蒙专用二维码”和“标准 New 二维码”，而不是改 `.env` 后重启整套服务；
+        2. 当前 864 runtime 在独立线程里长驻运行，最稳妥的切换方式是“更新配置 -> 退出旧登录态 -> 重启 provider 登录线程”；
+        3. 这样实现虽然比纯运行时热切换更直接，但代码层次更浅，也更便于后续继续接其他 server 变体。
+        """
+        if not isinstance(self.ipad_config, dict):
+            raise RuntimeError("wechat_ipad 运行时配置尚未初始化，暂时无法切换 864 登录入口")
+
+        current_server_type = self._normalize_wechat_provider_key(self.ipad_config.get("server_type", "legacy_855"))
+        if current_server_type != "server_864":
+            raise RuntimeError("当前仅支持在 server_864 模式下切换登录二维码入口")
+
+        normalized_login_qr_api = str(login_qr_api or "").strip().lower()
+        if normalized_login_qr_api not in {"harmony_api", "new", "new_x"}:
+            raise ValueError(f"不支持的 864 登录入口模式: {login_qr_api}")
+
+        normalized_login_way = str(login_way or self.ipad_config.get("login_way", "mac") or "mac").strip().lower()
+        if normalized_login_qr_api == "harmony_api":
+            normalized_login_way = "harmony"
+
+        if do_logout and self.ipad_bot and self.ipad_loop:
+            try:
+                logout_future = asyncio.run_coroutine_threadsafe(self.ipad_bot.log_out(), self.ipad_loop)
+                logout_future.result(timeout=20)
+            except Exception as e:
+                # 切换登录模式时，退出旧会话失败不应阻断后续重启：
+                # 1. 某些 864 版本在会话已失效时会直接返回错误；
+                # 2. 用户真正关心的是“后台能否尽快切到新的二维码入口”；
+                # 3. 因此这里记录日志后继续向下执行重启流程。
+                self.LOG.warning(f"切换 864 登录入口前执行退出请求失败，继续重启登录流程: {e}")
+
+        self.ipad_config["login_qr_api"] = normalized_login_qr_api
+        self.ipad_config["login_way"] = normalized_login_way
+        if isinstance(getattr(self.config, "wechat_ipad", None), dict):
+            self.config.wechat_ipad["login_qr_api"] = normalized_login_qr_api
+            self.config.wechat_ipad["login_way"] = normalized_login_way
+
+        self._clear_ipad_identity_cache()
+        switch_label_map = {
+            "harmony_api": "864 鸿蒙专用二维码",
+            "new": "864 标准 New 二维码",
+            "new_x": f"864 NewX 二维码（{normalized_login_way}）",
+        }
+        with self._ipad_login_qr_lock:
+            self.ipad_login_qr_state = {
+                "logged_in": False,
+                "active": True,
+                "status": "waiting",
+                "provider_name": "server_864",
+                "provider_stage": "login_required",
+                "connection_ready": False,
+                "login_required": True,
+                "status_text": f"正在切换到{switch_label_map.get(normalized_login_qr_api, normalized_login_qr_api)}，请稍候刷新二维码",
+                "current": {
+                    "login_qr_api": normalized_login_qr_api,
+                    "login_way": normalized_login_way,
+                    "updated_at": time.time(),
+                    "updated_at_text": time.strftime("%Y-%m-%d %H:%M:%S", time.localtime()),
+                },
+                "history": [],
+                "updated_at": time.time(),
+            }
+
+        self.stop_wechat_ipad()
+        if not self.init_wechat_ipad():
+            raise RuntimeError("重启 wechat_ipad 登录线程失败，请检查 864 服务端与配置")
+
+        return {
+            "server_type": "server_864",
+            "login_qr_api": normalized_login_qr_api,
+            "login_way": normalized_login_way,
+            "message": switch_label_map.get(normalized_login_qr_api, normalized_login_qr_api),
+        }
+
+    def logout_server_864_and_restart_login(self) -> dict:
+        """退出当前 864 登录态，并按现有二维码入口重新进入登录引导。"""
+        return self.switch_server_864_login_entry(
+            login_qr_api=str(self.ipad_config.get("login_qr_api", "new_x") or "new_x"),
+            login_way=str(self.ipad_config.get("login_way", "mac") or "mac"),
+            do_logout=True,
+        )
+
     def keep_running_and_block_process(self) -> None:
         """
         保持机器人运行，不让进程退出
diff --git a/wechat_ipad/providers/server_864/login.py b/wechat_ipad/providers/server_864/login.py
index a277613..17776e1 100644
--- a/wechat_ipad/providers/server_864/login.py
+++ b/wechat_ipad/providers/server_864/login.py
@@ -105,7 +105,19 @@ class LoginMixin(Server864APIClientBase):
         normalized_login_qr_api = str(login_qr_api or "new_x").strip().lower()
         normalized_login_way = self._normalize_login_way(login_way)
 
-        if normalized_login_qr_api in {"new_x", "x", "newx"}:
+        if normalized_login_qr_api in {"harmony_api", "harmony", "harmony_login_api"}:
+            # `HarmonyLoginApi` 是 864 服务端单独暴露的一条鸿蒙二维码链路：
+            # 1. 用户当前希望在 Dashboard 上显式切换“鸿蒙专用二维码”和“标准 New 二维码”；
+            # 2. 该接口的请求模型与 `GetLoginQrCodeNew` 一致，仍然只需要 `Proxy/Check`；
+            # 3. 因此这里单独加一个模式键，不去复用 `new_x + way=harmony`，避免两条链路在运维上混淆。
+            data = await self._request_data(
+                "post",
+                "/login/HarmonyLoginApi",
+                json_body={"Proxy": proxy_value, "Check": False},
+                timeout=30,
+            )
+            uuid, qr_url = self._extract_qr_response(data)
+        elif normalized_login_qr_api in {"new_x", "x", "newx"}:
             try:
                 # NewX 是当前 864 联调里更完整的一条登录链路：
                 # 1. 它支持 `Way` 指定登录端形态，兼容更多 server 变体；
@@ -126,6 +138,14 @@ class LoginMixin(Server864APIClientBase):
                     timeout=30,
                 )
                 uuid, qr_url = self._extract_qr_response(data)
+        elif normalized_login_qr_api in {"new", "legacy_new"}:
+            data = await self._request_data(
+                "post",
+                "/login/GetLoginQrCodeNew",
+                json_body={"Proxy": proxy_value, "Check": False},
+                timeout=30,
+            )
+            uuid, qr_url = self._extract_qr_response(data)
         else:
             data = await self._request_data(
                 "post",
@@ -211,5 +231,12 @@ class LoginMixin(Server864APIClientBase):
 
     async def log_out(self) -> bool:
         """退出当前 864 登录态。"""
-        await self._request_data("get", "/login/LogOutRequest", timeout=15)
+        try:
+            # 不同 864 版本里退出接口命名存在差异：
+            # 1. 当前项目早期接的是 `/login/LogOutRequest`；
+            # 2. 用户本地 864 源码中实际注册的是 `/login/LogOut`；
+            # 3. 因此这里优先尝试较新的 `/LogOut`，失败后再回退到旧路径，降低版本切换成本。
+            await self._request_data("get", "/login/LogOut", timeout=15)
+        except Exception:
+            await self._request_data("get", "/login/LogOutRequest", timeout=15)
         return True