diff --git a/src/main/java/org/cmh/backend/Config/SecurityConfig.java b/src/main/java/org/cmh/backend/Config/SecurityConfig.java
index 6ca67b9..8f4554d 100644
--- a/src/main/java/org/cmh/backend/Config/SecurityConfig.java
+++ b/src/main/java/org/cmh/backend/Config/SecurityConfig.java
@@ -17,7 +17,7 @@ public class SecurityConfig {
         http.csrf(AbstractHttpConfigurer::disable)
                 // Permit all requests to specific endpoints
                 .authorizeHttpRequests(authorize -> authorize
-                        .requestMatchers("/users/register", "/users/login").permitAll() // Allow these endpoints without authentication
+                        .requestMatchers("/users/register", "/users/login","/meetings/getMeetingById","/meetings/updateMeeting","/meetings/deleteMeeting","/meetings/addMeeting","/meetings/listAll").permitAll() // Allow these endpoints without authentication
                         .anyRequest().authenticated() // All other endpoints require authentication
                 )
                 // Configure form login
diff --git a/src/main/java/org/cmh/backend/authentication/controller/UserController.java b/src/main/java/org/cmh/backend/authentication/controller/UserController.java
index 0fc8dc7..753f36e 100644
--- a/src/main/java/org/cmh/backend/authentication/controller/UserController.java
+++ b/src/main/java/org/cmh/backend/authentication/controller/UserController.java
@@ -4,10 +4,8 @@ import org.cmh.backend.authentication.model.User;
 import org.cmh.backend.authentication.service.UserService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.PathVariable;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.web.bind.annotation.*;
 
 @RestController
 @RequestMapping("/users")
@@ -15,9 +13,34 @@ public class UserController {
     @Autowired
     private UserService userService;
 
+    @Autowired
+    private PasswordEncoder passwordEncoder;
+
     @GetMapping("/{username}")
     public ResponseEntity<User> getUser(@PathVariable String username) {
         User user = userService.getUserByUsername(username);
         return ResponseEntity.ok(user);
     }
+
+    @PostMapping("/register")
+    public ResponseEntity<String> registerUser(@RequestBody User user) {
+        // 检查用户名是否已经存在
+        if (userService.isUsernameTaken(user.getUsername())) {
+            return ResponseEntity.status(400).body("用户名已存在");
+        }
+        // 保存用户信息
+        userService.saveUser(user);
+        return ResponseEntity.ok("User registered successfully");
+    }
+
+    @PostMapping("/login")
+    public ResponseEntity<String> login(@RequestBody User user) {
+        // 处理登录逻辑
+        User existingUser = userService.getUserByUsername(user.getUsername());
+        if (existingUser != null && passwordEncoder.matches(user.getPassword(), existingUser.getPassword())) {
+            return ResponseEntity.ok("登录成功");
+        } else {
+            return ResponseEntity.status(401).body("用户名或密码错误");
+        }
+    }
 }
\ No newline at end of file
diff --git a/src/main/java/org/cmh/backend/authentication/service/UserService.java b/src/main/java/org/cmh/backend/authentication/service/UserService.java
index 0bdd5a0..e6755ca 100644
--- a/src/main/java/org/cmh/backend/authentication/service/UserService.java
+++ b/src/main/java/org/cmh/backend/authentication/service/UserService.java
@@ -3,6 +3,7 @@ package org.cmh.backend.authentication.service;
 import org.cmh.backend.authentication.model.User;
 import org.cmh.backend.authentication.repository.UserRepository;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.security.crypto.password.PasswordEncoder;
 import org.springframework.stereotype.Service;
 
 @Service
@@ -10,7 +11,23 @@ public class UserService {
     @Autowired
     private UserRepository userRepository;
 
+    @Autowired
+    private PasswordEncoder passwordEncoder;
+
+    // 获取用户信息通过用户名
     public User getUserByUsername(String username) {
         return userRepository.findByUsername(username);
     }
+
+    // 保存用户信息
+    public void saveUser(User user) {
+        // 对密码进行加密
+        user.setPassword(passwordEncoder.encode(user.getPassword()));
+        userRepository.save(user);
+    }
+
+    // 检查用户名是否已经存在
+    public boolean isUsernameTaken(String username) {
+        return userRepository.findByUsername(username) != null;
+    }
 }
\ No newline at end of file