diff --git a/src-tauri/src/account/commands.rs b/src-tauri/src/account/commands.rs
index 370ab199..2e5bfd89 100644
--- a/src-tauri/src/account/commands.rs
+++ b/src-tauri/src/account/commands.rs
@@ -586,16 +586,16 @@ pub fn delete_auth_server(app: AppHandle, url: String) -> XMCLResult<()> {
 
 use crate::account::helpers::authlib_injector::cauc;
 
-/// CAUC 步骤 1: eduroam 登录
+/// CAUC 步骤 1: 表单登录
 ///
 /// 返回是否需要绑定昵称
 #[tauri::command]
-pub async fn cauc_eduroam_login(
+pub async fn cauc_login(
   app: AppHandle,
   student_id: String,
   oa_password: String,
 ) -> XMCLResult<bool> {
-  let auth_state = cauc::eduroam_login(&app, student_id, oa_password).await?;
+  let auth_state = cauc::cauc_login(&app, student_id, oa_password).await?;
 
   // 将 auth_state 临时存储到应用状态中
   // 这样后续的绑定操作可以使用
@@ -650,7 +650,7 @@ pub async fn cauc_complete_login(
   log::info!("Auth state retrieved: {:?}", auth_state_option.is_some());
 
   let auth_state = auth_state_option.ok_or_else(|| {
-    log::error!("Auth state is None - user must call cauc_eduroam_login first!");
+    log::error!("Auth state is None - user must call cauc_login first!");
     AccountError::Invalid
   })?;
 
diff --git a/src-tauri/src/account/helpers/authlib_injector/cauc.rs b/src-tauri/src/account/helpers/authlib_injector/cauc.rs
index 95276046..d6af4785 100644
--- a/src-tauri/src/account/helpers/authlib_injector/cauc.rs
+++ b/src-tauri/src/account/helpers/authlib_injector/cauc.rs
@@ -46,11 +46,14 @@ async fn get_player_name(client: &Client, cookie_jar: &[(String, String)]) -> XM
     .await
     .map_err(|_| AccountError::NetworkError)?;
 
-  // 使用正则提取 data-mark="nickname">玩家名<
-  let re = regex::Regex::new(r#"data-mark="nickname">([^<]+)<"#).unwrap();
-  if let Some(caps) = re.captures(&html) {
+  // 使用正则提取 data-mark="nickname">玩家名<, 跳过页面里空的占位项
+  let re = regex::Regex::new(r#"data-mark="nickname">([^<]*)<"#).unwrap();
+  for caps in re.captures_iter(&html) {
     if let Some(name) = caps.get(1) {
-      return Ok(name.as_str().trim().to_string());
+      let trimmed = name.as_str().trim();
+      if !trimmed.is_empty() {
+        return Ok(trimmed.to_string());
+      }
     }
   }
 
@@ -99,17 +102,17 @@ pub struct CAUCAuthState {
   pub player_name: Option<String>,
 }
 
-pub async fn eduroam_login(
+pub async fn cauc_login(
   app: &AppHandle,
   student_id: String,
   oa_password: String,
 ) -> XMCLResult<CAUCAuthState> {
-  log::info!("CAUC eduroam login attempt for student: {}", student_id);
+  log::info!("CAUC login attempt for student: {}", student_id);
 
   let client = build_cauc_client(app)?;
 
-  // 步骤 1: 先访问登录页面获取 CSRF token
-  let login_page_url = format!("{}/auth/eduroam/login", CAUC_BASE_URL);
+  // 步骤 1: 先访问 CAUC 登录页获取 CSRF token
+  let login_page_url = format!("{}/auth/cauc/login", CAUC_BASE_URL);
   log::info!("Fetching login page: {}", login_page_url);
 
   let page_response = client.get(&login_page_url).send().await.map_err(|e| {
@@ -160,14 +163,14 @@ pub async fn eduroam_login(
     .post(&login_page_url)
     .header("Cookie", cookie_header.clone())
     .form(&[
-      ("student_number", student_id.as_str()),
-      ("password", oa_password.as_str()),
+      ("cauc_username", student_id.as_str()),
+      ("cauc_password", oa_password.as_str()),
       ("_token", csrf_token),
     ])
     .send()
     .await
     .map_err(|e| {
-      log::error!("CAUC eduroam login network error: {}", e);
+      log::error!("CAUC login network error: {}", e);
       AccountError::NetworkError
     })?;
 
@@ -189,7 +192,7 @@ pub async fn eduroam_login(
   }
 
   let status = response.status();
-  log::info!("CAUC eduroam login response status: {}", status);
+  log::info!("CAUC login response status: {}", status);
 
   // 记录Location头用于调试重定向
   if let Some(location_header) = response.headers().get("location") {
@@ -224,6 +227,15 @@ pub async fn eduroam_login(
 
     log::info!("Login redirect to: {}", location);
 
+    // CAUC 表单登录成功重定向到 /user, 失败(账号密码错误)会重定向回登录页。
+    if !location.contains("/user") {
+      log::error!(
+        "CAUC login failed: redirected to {} instead of /user",
+        location
+      );
+      return Err(AccountError::Invalid.into());
+    }
+
     // 检查重定向位置来判断是否需要绑定昵称
     let requires_bind = location.contains("/user/player/bind");
 
@@ -253,7 +265,7 @@ pub async fn eduroam_login(
     let requires_bind = requires_bind || (location.contains("/user") && player_name.is_none());
 
     log::info!(
-      "CAUC eduroam login successful, requires_bind: {}, player_name: {:?}",
+      "CAUC login successful, requires_bind: {}, player_name: {:?}",
       requires_bind,
       player_name
     );
@@ -285,7 +297,7 @@ pub async fn eduroam_login(
         let requires_bind = redirect_url.contains("/user/player/bind");
 
         log::info!(
-          "CAUC eduroam login successful (JSON response), requires_bind: {}",
+          "CAUC login successful (JSON response), requires_bind: {}",
           requires_bind
         );
 
@@ -306,7 +318,7 @@ pub async fn eduroam_login(
     );
     Err(AccountError::Invalid.into())
   } else {
-    log::error!("CAUC eduroam login failed: status {}", status);
+    log::error!("CAUC login failed: status {}", status);
     Err(AccountError::Invalid.into())
   }
 }
@@ -400,7 +412,10 @@ pub async fn authenticate(
   auth_state: &CAUCAuthState,
   oa_password: String,
 ) -> XMCLResult<(Vec<PlayerInfo>, bool)> {
-  let mut candidate_usernames: Vec<String> = vec![];
+  // CAUC 皮肤站上的账号以 <学工号>@cauc.edu.cn 为用户名, 纯学工号或玩家名无法通过
+  // yggdrasil authenticate, 所以邮箱优先。
+  let email = format!("{}@cauc.edu.cn", auth_state.student_id);
+  let mut candidate_usernames: Vec<String> = vec![email.clone()];
 
   if let Some(player_name) = auth_state.player_name.as_ref() {
     let trimmed = player_name.trim();
@@ -416,10 +431,6 @@ pub async fn authenticate(
     candidate_usernames.push(auth_state.student_id.clone());
   }
 
-  if candidate_usernames.is_empty() {
-    candidate_usernames.push(auth_state.student_id.clone());
-  }
-
   log::info!(
     "Authenticating with Yggdrasil API, candidates: {:?}",
     candidate_usernames
@@ -490,7 +501,7 @@ pub async fn authenticate(
       Some(access_token),
       None,
       Some(CAUC_YGGDRASIL_URL.to_string()),
-      Some(auth_state.student_id.clone()),
+      Some(email.clone()),
     )
     .await
     {
@@ -521,7 +532,7 @@ pub async fn authenticate(
         Some(access_token.clone()),
         None,
         Some(CAUC_YGGDRASIL_URL.to_string()),
-        Some(auth_state.student_id.clone()),
+        Some(email.clone()),
       )
       .await?;
 
@@ -636,8 +647,8 @@ pub async fn login_flow(
   oa_password: String,
   player_name: Option<String>,
 ) -> XMCLResult<LoginFlowResult> {
-  // 步骤 1: eduroam 登录
-  let auth_state = eduroam_login(app, student_id.clone(), oa_password.clone()).await?;
+  // 步骤 1: CAUC 表单登录
+  let auth_state = cauc_login(app, student_id.clone(), oa_password.clone()).await?;
 
   // 步骤 2: 检查是否需要绑定
   if auth_state.requires_bind {
diff --git a/src-tauri/src/lib.rs b/src-tauri/src/lib.rs
index 656af15e..df2327d1 100644
--- a/src-tauri/src/lib.rs
+++ b/src-tauri/src/lib.rs
@@ -93,7 +93,7 @@ pub async fn run() {
       account::commands::add_auth_server,
       account::commands::delete_auth_server,
       account::commands::fetch_auth_server,
-      account::commands::cauc_eduroam_login,
+      account::commands::cauc_login,
       account::commands::cauc_bind_player_name,
       account::commands::cauc_complete_login,
       instance::commands::retrieve_instance_list,
diff --git a/src/components/cauc-login-modal-simple.tsx b/src/components/cauc-login-modal-simple.tsx
index cd8b4de5..670a5242 100644
--- a/src/components/cauc-login-modal-simple.tsx
+++ b/src/components/cauc-login-modal-simple.tsx
@@ -30,7 +30,7 @@ interface CAUCLoginModalProps {
  * CAUC (中国民航大学) 登录模态框组件。
  *
  * 认证流程:
- * 1. 使用学工号 + OA 密码完成校园统一身份登录 (eduroam)
+ * 1. 使用学工号 + OA 密码完成 CAUC 校园统一身份登录
  * 2. 根据返回决定是否需要绑定昵称
  * 3. 完成 Yggdrasil 认证并写入启动器账号列表
  */
@@ -108,7 +108,7 @@ export const CAUCLoginModal: React.FC<CAUCLoginModalProps> = ({
     return isValid;
   };
 
-  const handleEduroamLogin = async () => {
+  const handleCaucLogin = async () => {
     if (!validateInputs()) {
       return;
     }
@@ -116,14 +116,11 @@ export const CAUCLoginModal: React.FC<CAUCLoginModalProps> = ({
     setIsSubmitting(true);
 
     try {
-      console.log("Attempting CAUC eduroam login with student ID:", studentId);
+      console.log("Attempting CAUC login with student ID:", studentId);
 
-      const response = await CAUCService.caucEduroamLogin(
-        studentId,
-        oaPassword
-      );
+      const response = await CAUCService.caucLogin(studentId, oaPassword);
 
-      console.log("CAUC eduroam login response:", response);
+      console.log("CAUC login response:", response);
 
       if (response.status === "success") {
         const needBind = Boolean(response.data);
@@ -143,7 +140,7 @@ export const CAUCLoginModal: React.FC<CAUCLoginModalProps> = ({
           await completeLogin(studentId, oaPassword);
         }
       } else {
-        console.error("CAUC eduroam login failed:", response);
+        console.error("CAUC login failed:", response);
         toast({
           title: response.message || "登录失败",
           description: response.details || "学工号或密码错误",
@@ -152,7 +149,7 @@ export const CAUCLoginModal: React.FC<CAUCLoginModalProps> = ({
         });
       }
     } catch (error) {
-      console.error("CAUC eduroam login error:", error);
+      console.error("CAUC login error:", error);
       toast({
         title: "登录失败",
         description:
@@ -275,7 +272,7 @@ export const CAUCLoginModal: React.FC<CAUCLoginModalProps> = ({
                   placeholder="请输入学工号"
                   value={studentId}
                   onChange={(e) => setStudentId(e.target.value)}
-                  onKeyPress={(e) => e.key === "Enter" && handleEduroamLogin()}
+                  onKeyPress={(e) => e.key === "Enter" && handleCaucLogin()}
                 />
                 <FormErrorMessage>{studentIdError}</FormErrorMessage>
               </FormControl>
@@ -287,7 +284,7 @@ export const CAUCLoginModal: React.FC<CAUCLoginModalProps> = ({
                   placeholder="请输入 OA 密码"
                   value={oaPassword}
                   onChange={(e) => setOaPassword(e.target.value)}
-                  onKeyPress={(e) => e.key === "Enter" && handleEduroamLogin()}
+                  onKeyPress={(e) => e.key === "Enter" && handleCaucLogin()}
                 />
                 <FormErrorMessage>{passwordError}</FormErrorMessage>
               </FormControl>
@@ -328,7 +325,7 @@ export const CAUCLoginModal: React.FC<CAUCLoginModalProps> = ({
           </Button>
           <Button
             colorScheme="blue"
-            onClick={requiresBind ? handleBindPlayerName : handleEduroamLogin}
+            onClick={requiresBind ? handleBindPlayerName : handleCaucLogin}
             isLoading={isSubmitting}
             loadingText={requiresBind ? "处理中..." : "登录中..."}
           >
diff --git a/src/components/cauc-login-modal.tsx b/src/components/cauc-login-modal.tsx
index 1e7cf6f1..4144b9a3 100644
--- a/src/components/cauc-login-modal.tsx
+++ b/src/components/cauc-login-modal.tsx
@@ -113,12 +113,9 @@ export const CAUCLoginModal: React.FC<CAUCLoginModalProps> = ({
     setIsLoading(true);
 
     try {
-      const response = await CAUCService.caucEduroamLogin(
-        studentId,
-        oaPassword
-      );
+      const response = await CAUCService.caucLogin(studentId, oaPassword);
 
-      console.log("CAUC eduroam login response:", response);
+      console.log("CAUC login response:", response);
 
       if (response.status === "success") {
         // 保存凭据供后续使用
diff --git a/src/locales/en.json b/src/locales/en.json
index d3a6894e..eebc62ac 100644
--- a/src/locales/en.json
+++ b/src/locales/en.json
@@ -2095,7 +2095,7 @@
       }
     },
     "cauc": {
-      "caucEduroamLogin": {
+      "caucLogin": {
         "success": "CAUC campus login successful",
         "error": {
           "title": "CAUC campus login failed",
diff --git a/src/locales/fr.json b/src/locales/fr.json
index ac366ecd..24be2b42 100644
--- a/src/locales/fr.json
+++ b/src/locales/fr.json
@@ -1880,7 +1880,7 @@
       }
     },
     "cauc": {
-      "caucEduroamLogin": {
+      "caucLogin": {
         "success": "Connexion campus CAUC réussie",
         "error": {
           "title": "Échec de la connexion campus CAUC",
diff --git a/src/locales/ja.json b/src/locales/ja.json
index 7b559311..07a3fbd9 100644
--- a/src/locales/ja.json
+++ b/src/locales/ja.json
@@ -1844,7 +1844,7 @@
       }
     },
     "cauc": {
-      "caucEduroamLogin": {
+      "caucLogin": {
         "success": "CAUCキャンパスログイン成功",
         "error": {
           "title": "CAUCキャンパスログイン失敗",
diff --git a/src/locales/zh-Hans.json b/src/locales/zh-Hans.json
index 9c03ef9c..3f26211f 100644
--- a/src/locales/zh-Hans.json
+++ b/src/locales/zh-Hans.json
@@ -2095,7 +2095,7 @@
       }
     },
     "cauc": {
-      "caucEduroamLogin": {
+      "caucLogin": {
         "success": "CAUC 校园登录成功",
         "error": {
           "title": "CAUC 校园登录失败",
diff --git a/src/locales/zh-Hant.json b/src/locales/zh-Hant.json
index e9306d1d..0c567990 100644
--- a/src/locales/zh-Hant.json
+++ b/src/locales/zh-Hant.json
@@ -2083,7 +2083,7 @@
       }
     },
     "cauc": {
-      "caucEduroamLogin": {
+      "caucLogin": {
         "success": "CAUC 校園登入成功",
         "error": {
           "title": "CAUC 校園登入失敗",
diff --git a/src/services/cauc.ts b/src/services/cauc.ts
index 452137c7..0dcd5b52 100644
--- a/src/services/cauc.ts
+++ b/src/services/cauc.ts
@@ -7,24 +7,24 @@ import { responseHandler } from "@/utils/response";
  * CAUC (中国民航大学) 认证服务
  *
  * 认证流程:
- * 1. caucEduroamLogin - 使用学工号和OA密码登录
+ * 1. caucLogin - 使用学工号和OA密码登录
  * 2. 如果返回 true,需要绑定昵称,调用 caucBindPlayerName
  * 3. caucCompleteLogin - 完成认证并添加玩家到账号列表
  */
 export class CAUCService {
   /**
-   * 步骤 1: 使用学工号和 OA 密码登录 eduroam
+   * 步骤 1: 使用学工号和 OA 密码提交 CAUC 表单登录
    *
    * @param {string} studentId - 学工号
    * @param {string} oaPassword - OA 密码
    * @returns {Promise<InvokeResponse<boolean>>} true 表示需要绑定昵称,false 表示可以直接登录
    */
   @responseHandler("cauc")
-  static async caucEduroamLogin(
+  static async caucLogin(
     studentId: string,
     oaPassword: string
   ): Promise<InvokeResponse<boolean>> {
-    return await invoke("cauc_eduroam_login", {
+    return await invoke("cauc_login", {
       studentId,
       oaPassword,
     });
@@ -33,7 +33,7 @@ export class CAUCService {
   /**
    * 步骤 2: 绑定游戏昵称 (仅新用户需要)
    *
-   * 这个方法必须在 caucEduroamLogin 返回 true 后调用
+   * 这个方法必须在 caucLogin 返回 true 后调用
    *
    * @param {string} playerName - 游戏昵称
    * @returns {Promise<InvokeResponse<void>>}