diff --git a/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/controller/TaskController.java b/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/controller/TaskController.java
index d6868dc..58bb366 100644
--- a/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/controller/TaskController.java
+++ b/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/controller/TaskController.java
@@ -1,6 +1,7 @@
 package cn.edu.hfut.rmdjzz.projectmanagement.controller;
 
 import cn.edu.hfut.rmdjzz.projectmanagement.entity.Task;
+import cn.edu.hfut.rmdjzz.projectmanagement.entity.query.ResultTask;
 import cn.edu.hfut.rmdjzz.projectmanagement.service.IProjectGroupService;
 import cn.edu.hfut.rmdjzz.projectmanagement.service.ITaskService;
 import cn.edu.hfut.rmdjzz.projectmanagement.utils.http.ResponseList;
@@ -26,12 +27,12 @@ public class TaskController {
 
     @SneakyThrows
     @GetMapping("/{fatherId}/subtask")
-    public ResponseList<Task> getSubTaskList(
+    public ResponseList<ResultTask> getSubTaskList(
             @RequestHeader("Token") String token,
             @PathVariable("projectId") Integer projectId,
             @PathVariable("fatherId") Long fatherId
     ) {
-        List<Task> result = taskService.getSubTaskList(token, projectId, fatherId);
+        List<ResultTask> result = taskService.getSubTaskList(token, projectId, fatherId);
         return ResponseList.ofSuccess("查询成功", result);
     }
 
diff --git a/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/entity/query/ResultProject.java b/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/entity/query/ResultProject.java
index 02fb102..482a88f 100644
--- a/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/entity/query/ResultProject.java
+++ b/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/entity/query/ResultProject.java
@@ -1,8 +1,6 @@
 package cn.edu.hfut.rmdjzz.projectmanagement.entity.query;
 
-import com.baomidou.mybatisplus.annotation.TableField;
 import com.baomidou.mybatisplus.annotation.TableId;
-import com.baomidou.mybatisplus.annotation.TableLogic;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 
diff --git a/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/entity/query/ResultTask.java b/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/entity/query/ResultTask.java
index e6fc8e4..e986087 100644
--- a/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/entity/query/ResultTask.java
+++ b/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/entity/query/ResultTask.java
@@ -30,5 +30,4 @@ public class ResultTask {
     @TableField(typeHandler = JacksonTypeHandler.class)
     private Map<String, Object> attachedInfo;
     private Boolean hasChildren;
-    private Boolean deleted;
 }
diff --git a/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/mapper/TaskMapper.java b/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/mapper/TaskMapper.java
index 2f801bb..5b18bde 100644
--- a/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/mapper/TaskMapper.java
+++ b/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/mapper/TaskMapper.java
@@ -1,12 +1,16 @@
 package cn.edu.hfut.rmdjzz.projectmanagement.mapper;
 
 import cn.edu.hfut.rmdjzz.projectmanagement.entity.Task;
+import cn.edu.hfut.rmdjzz.projectmanagement.entity.query.ResultTask;
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import org.apache.ibatis.annotations.Param;
+
+import java.util.List;
 
 /**
  * @author 张韬
  * created at 2022/7/4 14:52
  */
 public interface TaskMapper extends BaseMapper<Task> {
-
+    List<ResultTask> selectSubTaskList(@Param("projectId") Integer projectId, @Param("fatherId") Long fatherId);
 }
diff --git a/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/service/ITaskService.java b/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/service/ITaskService.java
index bd2165f..5474d64 100644
--- a/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/service/ITaskService.java
+++ b/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/service/ITaskService.java
@@ -1,6 +1,7 @@
 package cn.edu.hfut.rmdjzz.projectmanagement.service;
 
 import cn.edu.hfut.rmdjzz.projectmanagement.entity.Task;
+import cn.edu.hfut.rmdjzz.projectmanagement.entity.query.ResultTask;
 import cn.edu.hfut.rmdjzz.projectmanagement.exception.BadRequestException;
 import com.baomidou.mybatisplus.extension.service.IService;
 
@@ -11,7 +12,7 @@ import java.util.List;
  * created at 2022/7/4 14:49
  */
 public interface ITaskService extends IService<Task> {
-    List<Task> getSubTaskList(String token, Integer projectId, Long fatherId) throws BadRequestException;
+    List<ResultTask> getSubTaskList(String token, Integer projectId, Long fatherId) throws BadRequestException;
 
     Boolean existSubTask(String token, Integer projectId, Long taskId) throws BadRequestException;
 
diff --git a/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/service/impl/TaskServiceImpl.java b/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/service/impl/TaskServiceImpl.java
index dbb905d..439c13f 100644
--- a/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/service/impl/TaskServiceImpl.java
+++ b/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/service/impl/TaskServiceImpl.java
@@ -1,6 +1,7 @@
 package cn.edu.hfut.rmdjzz.projectmanagement.service.impl;
 
 import cn.edu.hfut.rmdjzz.projectmanagement.entity.Task;
+import cn.edu.hfut.rmdjzz.projectmanagement.entity.query.ResultTask;
 import cn.edu.hfut.rmdjzz.projectmanagement.exception.BadRequestException;
 import cn.edu.hfut.rmdjzz.projectmanagement.exception.TokenException;
 import cn.edu.hfut.rmdjzz.projectmanagement.mapper.TaskMapper;
@@ -30,11 +31,11 @@ public class TaskServiceImpl extends ServiceImpl<TaskMapper, Task> implements IT
 
     //FIXME: 抛出未授权异常
     @Override
-    public List<Task> getSubTaskList(String token, Integer projectId, Long fatherId) throws BadRequestException {
+    public List<ResultTask> getSubTaskList(String token, Integer projectId, Long fatherId) throws BadRequestException {
         if (projectGroupService.getUserLevelInGroup(token, projectId) == 0 || fatherId == null) {
             throw new BadRequestException("错误的访问参数");
         }
-        return baseMapper.selectList(Wrappers.<Task>lambdaQuery().eq(Task::getTaskProjectId, projectId).eq(Task::getTaskFatherId, fatherId));
+        return baseMapper.selectSubTaskList(projectId, fatherId);
     }
 
     @Override
@@ -97,7 +98,7 @@ public class TaskServiceImpl extends ServiceImpl<TaskMapper, Task> implements IT
                         Wrappers.<Task>lambdaUpdate()
                                 .in(Task::getTaskId, res)
                                 .set(Task::getTaskStatus, "关闭")
-                                .set(Task::getTaskClosedTime,LocalDateTime.now())
+                                .set(Task::getTaskClosedTime, LocalDateTime.now())
                 );
                 if (list == null || list.isEmpty()) break;
                 res = list.stream().map(Task::getTaskId).collect(Collectors.toList());
diff --git a/src/main/resources/mapper/ProjectMapper.xml b/src/main/resources/mapper/ProjectMapper.xml
index b45663a..d43bedf 100644
--- a/src/main/resources/mapper/ProjectMapper.xml
+++ b/src/main/resources/mapper/ProjectMapper.xml
@@ -2,20 +2,21 @@
 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
 <mapper namespace="cn.edu.hfut.rmdjzz.projectmanagement.mapper.ProjectMapper">
     <select id="findMyProject" resultType="cn.edu.hfut.rmdjzz.projectmanagement.entity.query.ResultProject">
-        SELECT * FROM
-            (SELECT project_id,
-                    project_name,
-                    contract_amount,
-                    project_importance,
-                    project_creator,
-                    pt1.project_class_name as project_class_name,
-                    pt2.project_class_name as project_subclass_name,
-                    is_completed as completed,
-                    is_deleted as deleted,
-                    project_closed_date
-             FROM project join project_type pt1 on project.project_class_id = pt1.project_class_id
-                          join project_type pt2 on project.project_subclass_id = pt2.project_class_id
-             WHERE project_id IN (SELECT DISTINCT project_id FROM project_group WHERE staff_id = #{id})) AS T
+        SELECT *
+        FROM (SELECT project_id,
+                     project_name,
+                     contract_amount,
+                     project_importance,
+                     project_creator,
+                     pt1.project_class_name AS project_class_name,
+                     pt2.project_class_name AS project_subclass_name,
+                     is_completed           AS completed,
+                     is_deleted             AS deleted,
+                     project_closed_date
+              FROM project
+                       JOIN project_type pt1 ON project.project_class_id = pt1.project_class_id
+                       JOIN project_type pt2 ON project.project_subclass_id = pt2.project_class_id
+              WHERE project_id IN (SELECT DISTINCT project_id FROM project_group WHERE staff_id = #{id})) AS T
             ${ew.customSqlSegment}
     </select>
 </mapper>
diff --git a/src/main/resources/mapper/TaskMapper.xml b/src/main/resources/mapper/TaskMapper.xml
new file mode 100644
index 0000000..ddfe28f
--- /dev/null
+++ b/src/main/resources/mapper/TaskMapper.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="cn.edu.hfut.rmdjzz.projectmanagement.mapper.TaskMapper">
+    <select id="selectSubTaskList" resultType="cn.edu.hfut.rmdjzz.projectmanagement.entity.query.ResultTask">
+        SELECT task_id,
+               task_name,
+               task_project_id,
+               task_holder_id,
+               s.staff_fullname AS task_holder_name,
+               task_status,
+               task_type,
+               task_father_id,
+               task_created_time,
+               task_start_time,
+               task_end_time,
+               task_closed_time,
+               task_priority,
+               task_description,
+               attached_info,
+               EXISTS(SELECT task_id FROM task WHERE task_father_id = task.task_id) AS has_children
+        FROM task
+        JOIN (SELECT staff_id, staff_fullname FROM staff) AS s ON task.task_holder_id = s.staff_id
+        WHERE is_deleted = 0
+          AND task_project_id = #{projectId}
+          AND task_father_id = #{fatherId}
+    </select>
+</mapper>