diff --git a/src/main/java/com/example/catchTheLetters/controller/AuthController.java b/src/main/java/com/example/catchTheLetters/controller/AuthController.java
index c512a3a..b4187bc 100644
--- a/src/main/java/com/example/catchTheLetters/controller/AuthController.java
+++ b/src/main/java/com/example/catchTheLetters/controller/AuthController.java
@@ -1,5 +1,6 @@
 package com.example.catchTheLetters.controller;
 
+import com.example.catchTheLetters.entity.Forget;
 import com.example.catchTheLetters.model.dto.LoginDto;
 import com.example.catchTheLetters.model.dto.RegisterDto;
 import com.example.catchTheLetters.entity.User;
@@ -92,4 +93,10 @@ public class AuthController {
     public R<String> uploadAvatar(@RequestHeader("token") String token, @RequestParam("file") MultipartFile file) {
         return authService.uploadAvatar(token, file);
     }
+
+    @ApiOperation(value = "忘记密码")
+    @PostMapping("/forget-password")
+    public R<String> forgetPassword(@RequestBody Forget forget){
+        return authService.forgetPassword(forget.getEmail(),forget.getPassword());
+    }
 }
diff --git a/src/main/java/com/example/catchTheLetters/entity/Forget.java b/src/main/java/com/example/catchTheLetters/entity/Forget.java
new file mode 100644
index 0000000..e05ea1d
--- /dev/null
+++ b/src/main/java/com/example/catchTheLetters/entity/Forget.java
@@ -0,0 +1,13 @@
+package com.example.catchTheLetters.entity;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class Forget {
+    String email;
+    String password;
+}
diff --git a/src/main/java/com/example/catchTheLetters/service/AuthService.java b/src/main/java/com/example/catchTheLetters/service/AuthService.java
index 0a48d2f..10843d4 100644
--- a/src/main/java/com/example/catchTheLetters/service/AuthService.java
+++ b/src/main/java/com/example/catchTheLetters/service/AuthService.java
@@ -78,4 +78,6 @@ public interface AuthService {
      * @return 头像地址
      */
     R<String> uploadAvatar(String token, MultipartFile file);
+
+    R<String> forgetPassword(String email,String newPassword);
 }
diff --git a/src/main/java/com/example/catchTheLetters/service/impl/AuthServiceImpl.java b/src/main/java/com/example/catchTheLetters/service/impl/AuthServiceImpl.java
index 6ea74d7..5ecf9e4 100644
--- a/src/main/java/com/example/catchTheLetters/service/impl/AuthServiceImpl.java
+++ b/src/main/java/com/example/catchTheLetters/service/impl/AuthServiceImpl.java
@@ -12,10 +12,12 @@ import com.example.catchTheLetters.utils.DESUtil;
 import com.example.catchTheLetters.utils.JwtUtil;
 import com.example.catchTheLetters.utils.MinioUtil;
 import com.example.catchTheLetters.utils.R;
+import com.mongodb.client.result.UpdateResult;
 import jakarta.annotation.Resource;
 import org.springframework.data.mongodb.core.MongoTemplate;
 import org.springframework.data.mongodb.core.query.Criteria;
 import org.springframework.data.mongodb.core.query.Query;
+import org.springframework.data.mongodb.core.query.Update;
 import org.springframework.stereotype.Service;
 import org.springframework.web.multipart.MultipartFile;
 
@@ -230,4 +232,16 @@ public class AuthServiceImpl implements AuthService {
 
         return success ? R.ok("http://1.14.105.160:9001/catchtheletters/avatar/" + fileName) : R.fail("上传失败");
     }
+
+    @Override
+    public R<String> forgetPassword(String email, String newPassword) {
+        String password = desUtil.SHA512(newPassword);
+        Query query = new Query(Criteria.where("email").is(email));
+        Update update = new Update().set("password", password);
+        UpdateResult updateResult = mongoTemplate.updateFirst(query, update, User.class);
+        if (updateResult.getMatchedCount() == 0) {
+            return R.fail("no user found");
+        }
+        return R.ok("修改成功");
+    }
 }