diff --git a/admin-core/src/main/java/com/ibeetl/admin/core/service/CorePlatformService.java b/admin-core/src/main/java/com/ibeetl/admin/core/service/CorePlatformService.java
index 6a33b865..9ffbd6e0 100644
--- a/admin-core/src/main/java/com/ibeetl/admin/core/service/CorePlatformService.java
+++ b/admin-core/src/main/java/com/ibeetl/admin/core/service/CorePlatformService.java
@@ -271,9 +271,12 @@ public class CorePlatformService {
 
     /**
      * 是否允许注册
+     * 该方法返回true/false 判断比较模糊，前端体验不好，建议使用{@link #isAllowUserCodeThrowMessage}
+     *
      * @param code
      * @return
      */
+    @Deprecated
     public boolean isAllowUserCode(String code){
         code = code.trim();
         CoreUser coreUser = new CoreUser();
@@ -282,6 +285,25 @@ public class CorePlatformService {
         return !code.startsWith(ACCESS_SUPPER_ADMIN) && coreUserList.size() == 0;
     }
 
+    /**
+     * 是否允许注册, 并返回异常信息
+     * @param code
+     * @return
+     */
+    public void isAllowUserCodeThrowMessage(String code){
+        code = code.trim();
+        CoreUser coreUser = new CoreUser();
+        coreUser.setCode(code);
+        List<CoreUser> coreUserList = coreUserDao.template(coreUser);
+        if (code.startsWith(ACCESS_SUPPER_ADMIN)) {
+            throw new PlatformException("注册账号不允许admin开头：" + code);
+        }
+
+        if (coreUserList != null && coreUserList.size() > 0) {
+            throw new PlatformException("注册的账号已存在：" + code);
+        }
+    }
+
     public boolean isAllowUserCode(Long id,String code){
         CoreUser coreUser = new CoreUser();
         coreUser.setCode(code);
diff --git a/web/src/main/java/com/ibeetl/jlw/service/StudentService.java b/web/src/main/java/com/ibeetl/jlw/service/StudentService.java
index 00cb62c4..428622e6 100644
--- a/web/src/main/java/com/ibeetl/jlw/service/StudentService.java
+++ b/web/src/main/java/com/ibeetl/jlw/service/StudentService.java
@@ -463,9 +463,7 @@ public class StudentService extends CoreBaseService<Student>{
         this.save(student);
         String code = student.createCode();
 
-        if (!platformService.isAllowUserCode(code)) {
-            throw new PlatformException("不允许的注册账号 " + code);
-        }
+        platformService.isAllowUserCodeThrowMessage(code);
 
         SchoolClass schoolClass = schoolClassService.queryById(student.getClassId());
         Long orgId = schoolClass.getOrgId();
@@ -662,6 +660,7 @@ public class StudentService extends CoreBaseService<Student>{
 
                             String code = pojo.createCode();//TODO 可改规则
 
+                            // 这里不需要修改，该接口 已经丢弃。
                             if (!platformService.isAllowUserCode(code)) {
                                 delList.add(pojo.getStudentId());
 //                                msg += "第"+(i+1)+"行不允许的注册账号 "+code+"<br>";
diff --git a/web/src/main/java/com/ibeetl/jlw/service/TeacherService.java b/web/src/main/java/com/ibeetl/jlw/service/TeacherService.java
index 196eba1c..c69f241f 100644
--- a/web/src/main/java/com/ibeetl/jlw/service/TeacherService.java
+++ b/web/src/main/java/com/ibeetl/jlw/service/TeacherService.java
@@ -231,9 +231,7 @@ public class TeacherService extends CoreBaseService<Teacher> {
         this.save(teacher);
         String code = teacher.createCode();//TODO 可改规则
 
-        if (!platformService.isAllowUserCode(code)) {
-            throw new PlatformException("不允许的注册账号 " + code);
-        }
+        platformService.isAllowUserCodeThrowMessage(code);
 
         UniversitiesColleges universitiesColleges = universitiesCollegesService.queryById(teacher.getUniversitiesCollegesId());
         Long orgId = universitiesColleges.getOrgId();