diff --git a/src/main/java/com/mathgenerator/controller/ChangePasswordController.java b/src/main/java/com/mathgenerator/controller/ChangePasswordController.java
index 9cbd825..46a1959 100644
--- a/src/main/java/com/mathgenerator/controller/ChangePasswordController.java
+++ b/src/main/java/com/mathgenerator/controller/ChangePasswordController.java
@@ -50,6 +50,12 @@ public class ChangePasswordController {
             return;
         }
 
+        // --- 新增的校验逻辑 ---
+        if (oldPassword.equals(newPassword)) {
+            showStatusMessage("新密码不能与当前密码相同！", true);
+            return;
+        }
+
         if (!UserService.isPasswordValid(newPassword)) {
             showStatusMessage("新密码格式错误！必须为6-10位，且包含大小写字母和数字。", true);
             return;