diff --git a/mywust-core/src/main/java/cn/wustlinghang/mywust/core/api/LibraryUrls.java b/mywust-core/src/main/java/cn/wustlinghang/mywust/core/api/LibraryUrls.java
index 7760ab2..3b37d73 100644
--- a/mywust-core/src/main/java/cn/wustlinghang/mywust/core/api/LibraryUrls.java
+++ b/mywust-core/src/main/java/cn/wustlinghang/mywust/core/api/LibraryUrls.java
@@ -5,7 +5,8 @@ public class LibraryUrls {
 
     public static final String LIBRARY_INDEX_URL = "https://libsys.wust.edu.cn/meta-local/opac/cas/rosetta";
 
-    public static final String LIBRARY_COOKIE_TEST_URL = "https://libsys.wust.edu.cn/meta-local/opac/users/info";
+    // 用违章记录信息api地址作为测试url（大部分人应该没有违章吧 :）
+    public static final String LIBRARY_COOKIE_TEST_URL = "https://libsys.wust.edu.cn/meta-local/opac/users/volts";
 
     public static final String LIBRARY_ACCOUNT_STATUS_API = "https://libsys.wust.edu.cn/meta-local/opac/users/stats";
 
diff --git a/mywust-core/src/main/java/cn/wustlinghang/mywust/core/request/service/auth/LibraryLogin.java b/mywust-core/src/main/java/cn/wustlinghang/mywust/core/request/service/auth/LibraryLogin.java
index af85574..b072c29 100644
--- a/mywust-core/src/main/java/cn/wustlinghang/mywust/core/request/service/auth/LibraryLogin.java
+++ b/mywust-core/src/main/java/cn/wustlinghang/mywust/core/request/service/auth/LibraryLogin.java
@@ -2,8 +2,8 @@ package cn.wustlinghang.mywust.core.request.service.auth;
 
 import cn.wustlinghang.mywust.core.api.LibraryUrls;
 import cn.wustlinghang.mywust.core.api.UnionAuthUrls;
-import cn.wustlinghang.mywust.exception.ApiException;
 import cn.wustlinghang.mywust.core.request.factory.library.LibraryRequestFactory;
+import cn.wustlinghang.mywust.exception.ApiException;
 import cn.wustlinghang.mywust.network.RequestClientOption;
 import cn.wustlinghang.mywust.network.Requester;
 import cn.wustlinghang.mywust.network.entitys.HttpRequest;
@@ -30,10 +30,15 @@ public class LibraryLogin {
         HttpResponse sessionResponse = requester.get(sessionRequest, requestOption);
         String cookies = sessionResponse.getCookies();
 
-        // 请求一次首页
+        // 请求一次首页，这次获得的cookie才是真正的cookie
         HttpRequest indexRequest = LibraryRequestFactory.indexRequest();
         indexRequest.setCookies(cookies);
-        requester.get(indexRequest, requestOption);
+        HttpResponse indexResponse = requester.get(indexRequest, requestOption);
+        cookies = indexResponse.getCookies() != null ? indexResponse.getCookies() : cookies;
+
+        if (!checkCookie(cookies)) {
+            throw new ApiException(ApiException.Code.COOKIE_INVALID);
+        }
 
         return cookies;
     }