diff --git a/chat_web_backend/src/main/java/com/inspur/llm/chat/base/security/cas/CasProperties.java b/chat_web_backend/src/main/java/com/inspur/llm/chat/base/security/cas/CasProperties.java
index 7100881..ebc3c0c 100644
--- a/chat_web_backend/src/main/java/com/inspur/llm/chat/base/security/cas/CasProperties.java
+++ b/chat_web_backend/src/main/java/com/inspur/llm/chat/base/security/cas/CasProperties.java
@@ -18,6 +18,8 @@ public class CasProperties {
     private String serverHost;
     /** CAS 服务器登录入口，通常 ${serverHost}/login */
     private String serverLogin;
+    /** CAS 服务器登出入口，通常 ${serverHost}/logout */
+    private String serverLogout;
     /** 本应用的 CAS 回调路径（servlet path），通常 /cas/login */
     private String appLogin;
 }
diff --git a/chat_web_backend/src/main/java/com/inspur/llm/chat/gpt/controller/app/LoginController.java b/chat_web_backend/src/main/java/com/inspur/llm/chat/gpt/controller/app/LoginController.java
index 951cb84..4dfbee4 100644
--- a/chat_web_backend/src/main/java/com/inspur/llm/chat/gpt/controller/app/LoginController.java
+++ b/chat_web_backend/src/main/java/com/inspur/llm/chat/gpt/controller/app/LoginController.java
@@ -6,6 +6,8 @@ import com.inspur.llm.chat.base.constant.SysConfigConstants;
 import com.inspur.llm.chat.base.security.JwtTokenUtils;
 import com.inspur.llm.chat.base.security.Oauth2Token;
 import com.inspur.llm.chat.base.security.UserDetail;
+import com.inspur.llm.chat.base.security.cas.CasProperties;
+import com.inspur.llm.chat.base.security.cas.CasUrlBuilder;
 import com.inspur.llm.chat.base.util.RedisUtils;
 import com.inspur.llm.chat.base.validator.ValidatorUtil;
 import com.inspur.llm.chat.gpt.enums.ResponseEnum;
@@ -27,6 +29,12 @@ import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
+import javax.servlet.http.HttpServletRequest;
+import java.net.URLEncoder;
+import java.nio.charset.StandardCharsets;
+import java.util.HashMap;
+import java.util.Map;
+
 import java.util.Optional;
 import java.util.Set;
 
@@ -47,6 +55,8 @@ public class LoginController {
     private IUserService userService;
     @Autowired
     private RedisUtils redisUtils;
+    @Autowired
+    private CasProperties casProperties;
 
     /**
      * 登录
@@ -101,6 +111,46 @@ public class LoginController {
         return ResponseInfo.success(token);
     }
 
+    /**
+     * 退出登录：删 Redis 里的 token + 返回 CAS server logout URL（若用户用 CAS 登录的）
+     *
+     * 前端拿到 casLogoutUrl 后 window.location.href 跳过去，CAS 服务器会清掉 SSO cookie
+     * 并跳回 service 参数指定的页面（我们的 /login）。这样下次再点"统一身份登录"会重新跑
+     * CAS 认证流，不会因为 SSO cookie 还在而直接静默登入。
+     */
+    @PostMapping("/api/logout")
+    public ResponseInfo<Map<String, String>> logout(HttpServletRequest request) {
+        Map<String, String> data = new HashMap<>();
+        try {
+            UserDetail userDetail = JwtTokenUtils.getLoginUser();
+            if (userDetail != null) {
+                // 删 Redis 里这个 session 的 token
+                String key = RedisConstants.LOGIN_TOKEN_KEY
+                        + userDetail.getId() + StringPoolConstant.COLON + userDetail.getSessionId();
+                redisUtils.del(key);
+            }
+        } catch (Exception e) {
+            // Redis 不可用不影响登出流程
+            e.printStackTrace();
+        }
+        SecurityContextHolder.clearContext();
+
+        // 拼 CAS server logout URL
+        // service 参数：让 CAS 退出后回跳到我们的前端 login 页（动态用 X-Forwarded-Host）
+        String backToFront;
+        try {
+            backToFront = URLEncoder.encode(
+                    CasUrlBuilder.buildServiceUrl(request, "/metalinfo/#/login"),
+                    StandardCharsets.UTF_8.name());
+        } catch (Exception e) {
+            backToFront = "";
+        }
+        String casLogoutUrl = casProperties.getServerLogout()
+                + (backToFront.isEmpty() ? "" : "?service=" + backToFront);
+        data.put("casLogoutUrl", casLogoutUrl);
+        return ResponseInfo.success(data);
+    }
+
     /**
      * 添加登录日志
      *
diff --git a/chat_web_backend/src/main/java/com/inspur/llm/chat/gpt/controller/gpt/FileController.java b/chat_web_backend/src/main/java/com/inspur/llm/chat/gpt/controller/gpt/FileController.java
index bc17394..03ffda6 100644
--- a/chat_web_backend/src/main/java/com/inspur/llm/chat/gpt/controller/gpt/FileController.java
+++ b/chat_web_backend/src/main/java/com/inspur/llm/chat/gpt/controller/gpt/FileController.java
@@ -152,6 +152,8 @@ public class FileController extends BaseController {
      */
     @GetMapping("/list")
     public ResponseInfo<List<UploadFileVO>> listFile(@RequestParam Map map) {
+        // 强制按当前登录用户隔离，防止枚举别人的 knowledgeBaseId/folderId 拿到他人文件元信息
+        map.put("userId", getSysUserId());
         return fileService.listFile(new Query(map));
     }
 
diff --git a/chat_web_backend/src/main/resources/application.yml b/chat_web_backend/src/main/resources/application.yml
index e1097a8..ae55e02 100644
--- a/chat_web_backend/src/main/resources/application.yml
+++ b/chat_web_backend/src/main/resources/application.yml
@@ -97,6 +97,7 @@ security:
   cas:
     server-host: http://192.168.203.20:8180
     server-login: ${security.cas.server-host}/login
+    server-logout: ${security.cas.server-host}/logout
     app-login: /cas/login
 
 
diff --git a/chat_web_backend/src/main/resources/mapper/gpt/UploadFileMapper.xml b/chat_web_backend/src/main/resources/mapper/gpt/UploadFileMapper.xml
index 83b660f..66a0f8c 100644
--- a/chat_web_backend/src/main/resources/mapper/gpt/UploadFileMapper.xml
+++ b/chat_web_backend/src/main/resources/mapper/gpt/UploadFileMapper.xml
@@ -44,6 +44,7 @@
             <if test="q.folderId != null and q.folderId > -1"> and t.folder_id = #{q.folderId}</if>
             <if test="q.embeddingId != null and q.embeddingId != ''"> and t.embedding_id = #{q.embeddingId}</if>
             <if test="q.knowledgeBaseId != null and q.knowledgeBaseId != ''"> and t.knowledge_base_id = #{q.knowledgeBaseId}</if>
+            <if test="q.userId != null"> and t.user_id = #{q.userId}</if>
             <if test="q.type != null"> and t.type = #{q.type}</if>
             <if test="q.startDate != null and q.startDate != ''"> and date_format(t.create_time,'%Y-%m-%d') &gt;= #{q.startDate} </if>
             <if test="q.endDate != null and q.endDate != ''"> and date_format(t.create_time,'%Y-%m-%d') &lt;= #{q.endDate} </if>
diff --git a/chat_web_front/src/api/index.ts b/chat_web_front/src/api/index.ts
index 4a846aa..55de47b 100644
--- a/chat_web_front/src/api/index.ts
+++ b/chat_web_front/src/api/index.ts
@@ -16,6 +16,13 @@ export function fetchVerify<T>(data: object) {
   })
 }
 
+// 退出登录：清后端 Redis 里的 token，返回 CAS server logout URL（前端跳过去清 SSO cookie）
+export function fetchLogout<T>() {
+  return post<T>({
+    url: '/app/api/logout',
+  })
+}
+
 // 获取用户信息
 export function fetchSession<T>() {
   return get<T>({
diff --git a/chat_web_front/src/components/Operates.vue b/chat_web_front/src/components/Operates.vue
index 5239d8c..53c5bde 100644
--- a/chat_web_front/src/components/Operates.vue
+++ b/chat_web_front/src/components/Operates.vue
@@ -57,6 +57,7 @@ import { useAuthStore } from "@/store";
 import { reactive, watch, computed } from "vue";
 import { useRouter, useRoute } from "vue-router";
 import { User, Setting, SwitchButton, TopRight } from "@element-plus/icons-vue";
+import { fetchLogout } from "@/api";
 
 const authStore = useAuthStore();
 const isAdmin = computed(() => authStore.session?.admind === true);
@@ -112,9 +113,22 @@ const openExtLink = (url: string) => {
   window.open(url, '_blank');
 };
 
-const quit = () => {
+const quit = async () => {
+  // 调后端 logout：清 Redis token + 拿 CAS 服务器登出 URL
+  // 拿到后跳过去清 CAS SSO cookie，否则下次"统一身份登录"会因为 cookie 还在直接静默登入
+  let casLogoutUrl: string | null = null;
+  try {
+    const res: any = await fetchLogout();
+    casLogoutUrl = res?.data?.casLogoutUrl || null;
+  } catch (e) {
+    console.warn("logout API 调用失败，本地清理后跳登录页", e);
+  }
   authStore.removeToken();
-  router.push("/login");
+  if (casLogoutUrl) {
+    window.location.href = casLogoutUrl;
+  } else {
+    router.push("/login");
+  }
 };
 
 const goProfile = () => {