diff --git a/src/main/java/icu/sunway/ai_spring_example/Service/UserService.java b/src/main/java/icu/sunway/ai_spring_example/Service/UserService.java
new file mode 100644
index 0000000..0f449a7
--- /dev/null
+++ b/src/main/java/icu/sunway/ai_spring_example/Service/UserService.java
@@ -0,0 +1,20 @@
+package icu.sunway.ai_spring_example.Service;
+
+import com.baomidou.mybatisplus.extension.service.IService;
+import icu.sunway.ai_spring_example.pojo.Dto.UserDTO;
+import icu.sunway.ai_spring_example.pojo.Entity.User;
+
+public interface UserService extends IService<User> {
+
+    /*
+    * 用户登录
+    * @param userDTO 用户登录信息
+     */
+    User login(UserDTO userDTO);
+
+    /*
+    *用户更新
+    * @param userDTO 用户更新信息
+     */
+    void update(UserDTO userDTO);
+}