diff --git a/src/main/java/com/ai/da/service/impl/AccountServiceImpl.java b/src/main/java/com/ai/da/service/impl/AccountServiceImpl.java
index c0097b5c..3baf594a 100644
--- a/src/main/java/com/ai/da/service/impl/AccountServiceImpl.java
+++ b/src/main/java/com/ai/da/service/impl/AccountServiceImpl.java
@@ -1454,19 +1454,23 @@ public class AccountServiceImpl extends ServiceImpl<AccountMapper, Account> impl
             queryWrapper.in("user_email", allEmail).select("user_email");
 
             // 重复的邮箱
-            List<String> collect = baseMapper.selectList(queryWrapper).stream().map(Account::getUserEmail).collect(Collectors.toList());
-            if (!collect.isEmpty()){
+            List<String> duplicateEmails = baseMapper.selectList(queryWrapper).stream().map(Account::getUserEmail).collect(Collectors.toList());
+            if (!duplicateEmails.isEmpty()){
                 // 移除Code-Create新增用户中在AiDA已有账号的邮箱，allEmail中剩余邮箱均为新用户邮箱
-                allEmail.removeAll(collect);
+                allEmail.removeIf(item -> duplicateEmails.stream()
+                        .anyMatch(removeItem -> removeItem.equalsIgnoreCase(item)));
                 if (!allEmail.isEmpty()){
-                    for (Map<String,String> userInfo : newUsersInfo){
+                    Iterator<Map<String, String>> iterator = newUsersInfo.iterator();
+                    while (iterator.hasNext()) {
+                        Map<String, String> userInfo = iterator.next();
                         String email = userInfo.get("email");
                         if (!allEmail.contains(email)) {
-                            newUsersInfo.remove(userInfo); // 移除不在 allEmail 中的用户
+                            iterator.remove(); // 使用迭代器安全地移除元素
                         }
                     }
+                }else {
+                    newUsersInfo.clear();
                 }
-
             }
             // 将新增用户添加到AiDA，身份为游客
             if (!newUsersInfo.isEmpty()){