diff --git a/han-note-user/han-note-user-api/src/main/java/com/hanserwei/hannote/user/dto/req/FindUserByIdReqDTO.java b/han-note-user/han-note-user-api/src/main/java/com/hanserwei/hannote/user/dto/req/FindUserByIdReqDTO.java
new file mode 100644
index 0000000..f250ee1
--- /dev/null
+++ b/han-note-user/han-note-user-api/src/main/java/com/hanserwei/hannote/user/dto/req/FindUserByIdReqDTO.java
@@ -0,0 +1,21 @@
+package com.hanserwei.hannote.user.dto.req;
+
+import jakarta.validation.constraints.NotNull;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+@Builder
+public class FindUserByIdReqDTO {
+
+    /**
+     * 用户ID
+     */
+    @NotNull(message = "用户 ID 不能为空")
+    private Long id;
+
+}
\ No newline at end of file
diff --git a/han-note-user/han-note-user-api/src/main/java/com/hanserwei/hannote/user/dto/resp/FindUserByIdRspDTO.java b/han-note-user/han-note-user-api/src/main/java/com/hanserwei/hannote/user/dto/resp/FindUserByIdRspDTO.java
new file mode 100644
index 0000000..0fb9df0
--- /dev/null
+++ b/han-note-user/han-note-user-api/src/main/java/com/hanserwei/hannote/user/dto/resp/FindUserByIdRspDTO.java
@@ -0,0 +1,28 @@
+package com.hanserwei.hannote.user.dto.resp;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+@Builder
+public class FindUserByIdRspDTO {
+
+    /**
+     * 用户 ID
+     */
+    private Long id;
+
+    /**
+     * 昵称
+     */
+    private String nickName;
+
+    /**
+     * 头像
+     */
+    private String avatar;
+}
\ No newline at end of file
diff --git a/han-note-user/han-note-user-biz/src/main/java/com/hanserwei/hannote/user/biz/controller/UserController.java b/han-note-user/han-note-user-biz/src/main/java/com/hanserwei/hannote/user/biz/controller/UserController.java
index 3a0c739..98553b4 100644
--- a/han-note-user/han-note-user-biz/src/main/java/com/hanserwei/hannote/user/biz/controller/UserController.java
+++ b/han-note-user/han-note-user-biz/src/main/java/com/hanserwei/hannote/user/biz/controller/UserController.java
@@ -5,9 +5,11 @@ import com.hanserwei.framework.common.response.Response;
 import com.hanserwei.hannote.user.biz.model.vo.UpdateUserInfoReqVO;
 import com.hanserwei.hannote.user.biz.service.UserService;
 import com.hanserwei.hannote.user.dto.req.FindUserByEmailReqDTO;
+import com.hanserwei.hannote.user.dto.req.FindUserByIdReqDTO;
 import com.hanserwei.hannote.user.dto.req.RegisterUserReqDTO;
 import com.hanserwei.hannote.user.dto.req.UpdateUserPasswordReqDTO;
 import com.hanserwei.hannote.user.dto.resp.FindUserByEmailRspDTO;
+import com.hanserwei.hannote.user.dto.resp.FindUserByIdRspDTO;
 import jakarta.annotation.Resource;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.http.MediaType;
@@ -27,7 +29,7 @@ public class UserController {
 
     /**
      * 用户信息修改
-     * 
+     *
      * @param updateUserInfoReqVO 修改信息请求
      * @return 响应
      */
@@ -55,4 +57,10 @@ public class UserController {
         return userService.updatePassword(updateUserPasswordReqDTO);
     }
 
+    @PostMapping("/findById")
+    @ApiOperationLog(description = "查询用户信息")
+    public Response<FindUserByIdRspDTO> findById(@Validated @RequestBody FindUserByIdReqDTO findUserByIdReqDTO) {
+        return userService.findById(findUserByIdReqDTO);
+    }
+
 }
\ No newline at end of file
diff --git a/han-note-user/han-note-user-biz/src/main/java/com/hanserwei/hannote/user/biz/service/UserService.java b/han-note-user/han-note-user-biz/src/main/java/com/hanserwei/hannote/user/biz/service/UserService.java
index efbe969..986e72c 100644
--- a/han-note-user/han-note-user-biz/src/main/java/com/hanserwei/hannote/user/biz/service/UserService.java
+++ b/han-note-user/han-note-user-biz/src/main/java/com/hanserwei/hannote/user/biz/service/UserService.java
@@ -5,9 +5,11 @@ import com.hanserwei.framework.common.response.Response;
 import com.hanserwei.hannote.user.biz.domain.dataobject.UserDO;
 import com.hanserwei.hannote.user.biz.model.vo.UpdateUserInfoReqVO;
 import com.hanserwei.hannote.user.dto.req.FindUserByEmailReqDTO;
+import com.hanserwei.hannote.user.dto.req.FindUserByIdReqDTO;
 import com.hanserwei.hannote.user.dto.req.RegisterUserReqDTO;
 import com.hanserwei.hannote.user.dto.req.UpdateUserPasswordReqDTO;
 import com.hanserwei.hannote.user.dto.resp.FindUserByEmailRspDTO;
+import com.hanserwei.hannote.user.dto.resp.FindUserByIdRspDTO;
 
 public interface UserService extends IService<UserDO> {
 
@@ -42,4 +44,12 @@ public interface UserService extends IService<UserDO> {
      * @return 响应结果
      */
     Response<?> updatePassword(UpdateUserPasswordReqDTO updateUserPasswordReqDTO);
+
+    /**
+     * 根据用户 ID 查询用户信息
+     *
+     * @param findUserByIdReqDTO 查询用户信息请求参数
+     * @return 响应结果
+     */
+    Response<FindUserByIdRspDTO> findById(FindUserByIdReqDTO findUserByIdReqDTO);
 }
\ No newline at end of file
diff --git a/han-note-user/han-note-user-biz/src/main/java/com/hanserwei/hannote/user/biz/service/impl/UserServiceImpl.java b/han-note-user/han-note-user-biz/src/main/java/com/hanserwei/hannote/user/biz/service/impl/UserServiceImpl.java
index b0ea4d9..ce9b388 100644
--- a/han-note-user/han-note-user-biz/src/main/java/com/hanserwei/hannote/user/biz/service/impl/UserServiceImpl.java
+++ b/han-note-user/han-note-user-biz/src/main/java/com/hanserwei/hannote/user/biz/service/impl/UserServiceImpl.java
@@ -25,9 +25,11 @@ import com.hanserwei.hannote.user.biz.rpc.DistributedIdGeneratorRpcService;
 import com.hanserwei.hannote.user.biz.rpc.OssRpcService;
 import com.hanserwei.hannote.user.biz.service.UserService;
 import com.hanserwei.hannote.user.dto.req.FindUserByEmailReqDTO;
+import com.hanserwei.hannote.user.dto.req.FindUserByIdReqDTO;
 import com.hanserwei.hannote.user.dto.req.RegisterUserReqDTO;
 import com.hanserwei.hannote.user.dto.req.UpdateUserPasswordReqDTO;
 import com.hanserwei.hannote.user.dto.resp.FindUserByEmailRspDTO;
+import com.hanserwei.hannote.user.dto.resp.FindUserByIdRspDTO;
 import jakarta.annotation.Resource;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.StringUtils;
@@ -204,7 +206,7 @@ public class UserServiceImpl extends ServiceImpl<UserDOMapper, UserDO> implement
     public Response<FindUserByEmailRspDTO> findByEmail(FindUserByEmailReqDTO findUserByEmailReqDTO) {
         String email = findUserByEmailReqDTO.getEmail();
         UserDO userDO = this.getOne(new QueryWrapper<UserDO>().eq("email", email));
-        if (Objects.isNull(userDO)){
+        if (Objects.isNull(userDO)) {
             throw new ApiException(ResponseCodeEnum.USER_NOT_FOUND);
         }
         // 构建返参
@@ -229,5 +231,23 @@ public class UserServiceImpl extends ServiceImpl<UserDOMapper, UserDO> implement
         // 更新用户密码
         return updateById(userDO) ? Response.success() : Response.fail();
     }
+
+    @Override
+    public Response<FindUserByIdRspDTO> findById(FindUserByIdReqDTO findUserByIdReqDTO) {
+        Long userId = findUserByIdReqDTO.getId();
+        UserDO userDO = this.getOne(new QueryWrapper<UserDO>().eq("id", userId));
+
+        // 判空
+        if (Objects.isNull(userDO)) {
+            throw new ApiException(ResponseCodeEnum.USER_NOT_FOUND);
+        }
+        // 构建返参
+        FindUserByIdRspDTO findUserByIdRspDTO = FindUserByIdRspDTO.builder()
+                .id(userDO.getId())
+                .nickName(userDO.getNickname())
+                .avatar(userDO.getAvatar())
+                .build();
+        return Response.success(findUserByIdRspDTO);
+    }
 }