diff --git a/src/extension.ts b/src/extension.ts
index 183d353..bea0771 100644
--- a/src/extension.ts
+++ b/src/extension.ts
@@ -161,18 +161,29 @@ export async function activate(context: vscode.ExtensionContext) {
     "ic-coder.login",
     async () => {
       try {
-        // 先清除 session 偏好，避免 VSCode 弹出"账户不一致"确认框
-        try {
-          await vscode.authentication.getSession("iccoder", [], {
-            clearSessionPreference: true,
-            createIfNone: false
-          });
-        } catch {
-          // 忽略错误
+        const session = await vscode.authentication.getSession("iccoder", [], {
+          createIfNone: false,
+        });
+        const expired = session?.accessToken
+          ? isTokenExpired(session.accessToken)
+          : null;
+
+        // 会话仍有效时，直接打开聊天面板
+        if (session && expired !== true) {
+          vscode.commands.executeCommand("ic-coder.openChat");
+          return;
         }
 
-        // 创建新 session
-        await vscode.authentication.getSession("iccoder", [], { createIfNone: true });
+        // 1) 清空当前登录状态信息
+        await authProvider.clearSessionsForRelogin();
+        await context.globalState.update("icCoderSessions", []);
+        await context.globalState.update("icCoderUserInfo", undefined);
+
+        // 2) 重新登录（强制新会话）
+        await vscode.authentication.getSession("iccoder", [], {
+          clearSessionPreference: true,
+          forceNewSession: true,
+        });
       } catch (error) {
         vscode.window.showErrorMessage(`登录失败: ${error}`);
       }
diff --git a/src/services/icCoderAuthProvider.ts b/src/services/icCoderAuthProvider.ts
index 153317b..244a01b 100644
--- a/src/services/icCoderAuthProvider.ts
+++ b/src/services/icCoderAuthProvider.ts
@@ -176,6 +176,28 @@ export class ICCoderAuthenticationProvider
     }
   }
 
+  /**
+   * Clear local authentication state without window reload.
+   * Used by re-login flow when session is expired.
+   */
+  async clearSessionsForRelogin(): Promise<void> {
+    if (this._sessions.length === 0) {
+      await clearUserInfo();
+      return;
+    }
+
+    const removed = [...this._sessions];
+    this._sessions = [];
+    await this.saveSessions();
+    await clearUserInfo();
+
+    this._onDidChangeSessions.fire({
+      added: [],
+      removed,
+      changed: [],
+    });
+  }
+
   /**
    * 生成会话 ID
    */
diff --git a/src/views/ICViewProvider.ts b/src/views/ICViewProvider.ts
index f4a55fb..f45cabf 100644
--- a/src/views/ICViewProvider.ts
+++ b/src/views/ICViewProvider.ts
@@ -256,7 +256,7 @@ export class ICViewProvider implements vscode.WebviewViewProvider {
           vscode.commands.executeCommand("ic-coder.login");
         } else if (message.command === "logout") {
           // 退出登录（前端已有确认对话框）
-          vscode.commands.executeCommand('iccoder.logout');
+          vscode.commands.executeCommand("ic-coder.logout");
         } else if (message.command === "openICCoder") {
           // 打开 IC Coder 官网
           vscode.env.openExternal(vscode.Uri.parse('https://www.iccoder.com'));