diff --git a/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/controller/ProjectGroupController.java b/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/controller/ProjectGroupController.java
index d8a3877..b4b79ec 100644
--- a/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/controller/ProjectGroupController.java
+++ b/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/controller/ProjectGroupController.java
@@ -2,7 +2,6 @@ package cn.edu.hfut.rmdjzz.projectmanagement.controller;
 
 import cn.edu.hfut.rmdjzz.projectmanagement.entity.ProjectGroup;
 import cn.edu.hfut.rmdjzz.projectmanagement.entity.dto.ProjectGroupDTO;
-import cn.edu.hfut.rmdjzz.projectmanagement.entity.dto.StaffProcessDTO;
 import cn.edu.hfut.rmdjzz.projectmanagement.entity.vo.GroupPositionVO;
 import cn.edu.hfut.rmdjzz.projectmanagement.exception.BadRequestException;
 import cn.edu.hfut.rmdjzz.projectmanagement.exception.ForbiddenException;
@@ -20,7 +19,6 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.*;
 
 import java.util.Map;
-import java.util.Objects;
 
 /**
  * @author 史鹏辉
@@ -94,13 +92,7 @@ public class ProjectGroupController {
             @PathVariable Integer projectId,
             @PathVariable Integer staffId
     ) {
-        if (projectGroupService.compareProjectAccessLevel(projectId, token, staffId) >= 0) {
-            throw new ForbiddenException(ForbiddenException.UNABLE_TO_OPERATE);
-        }
-        if (projectGroupService.remove(Wrappers.<ProjectGroup>lambdaQuery()
-                .eq(ProjectGroup::getProjectId, projectId)
-                .eq(ProjectGroup::getStaffId, staffId))
-        ) {
+        if (projectGroupService.removeMember(token, projectId, staffId)) {
             return ResponseMap.ofSuccess();
         }
         throw new BadRequestException(BadRequestException.OPERATE_FAILED);
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 c5cada1..6c7105b 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
@@ -3,7 +3,6 @@ package cn.edu.hfut.rmdjzz.projectmanagement.controller;
 import cn.edu.hfut.rmdjzz.projectmanagement.entity.Task;
 import cn.edu.hfut.rmdjzz.projectmanagement.entity.dto.TaskDTO;
 import cn.edu.hfut.rmdjzz.projectmanagement.exception.BadRequestException;
-import cn.edu.hfut.rmdjzz.projectmanagement.exception.ForbiddenException;
 import cn.edu.hfut.rmdjzz.projectmanagement.service.IProjectService;
 import cn.edu.hfut.rmdjzz.projectmanagement.service.ITaskService;
 import cn.edu.hfut.rmdjzz.projectmanagement.utils.TokenUtils;
@@ -40,8 +39,8 @@ public class TaskController {
 
     @SneakyThrows
     @GetMapping("/mine")
-    public ResponseList<Task> getMyTasks(@RequestHeader(TokenUtils.HEADER_TOKEN) String token, @PathVariable("projectId") Integer projectId) {
-        List<Task> result = taskService.listMyTasks(token, projectId);
+    public ResponseList<TaskDTO> getMyTasks(@RequestHeader(TokenUtils.HEADER_TOKEN) String token, @PathVariable("projectId") Integer projectId) {
+        List<TaskDTO> result = taskService.listMyTasks(token, projectId);
         return ResponseList.ofSuccess(result);
     }
 
@@ -117,7 +116,7 @@ public class TaskController {
             @RequestHeader(TokenUtils.HEADER_TOKEN) String token,
             @PathVariable Integer projectId
     ) {
-        if(!projectService.checkOpenStatus(projectId)) {
+        if (!projectService.checkOpenStatus(projectId)) {
             throw new BadRequestException(IProjectService.PROJECT_UNOPENED);
         }
         return ResponseMap.ofSuccess("查询成功", taskService.getProjectProcessOfEveryone(token, projectId));
@@ -131,7 +130,7 @@ public class TaskController {
             @PathVariable Integer projectId,
             @PathVariable(required = false) Integer staffId
     ) {
-        if(!projectService.checkOpenStatus(projectId)) {
+        if (!projectService.checkOpenStatus(projectId)) {
             throw new BadRequestException(IProjectService.PROJECT_UNOPENED);
         }
         return ResponseList.ofSuccess("查询成功", taskService.getProjectStatistics(token, projectId, staffId));
diff --git a/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/mapper/ProjectGroupMapper.java b/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/mapper/ProjectGroupMapper.java
index ff46c40..50b0106 100644
--- a/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/mapper/ProjectGroupMapper.java
+++ b/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/mapper/ProjectGroupMapper.java
@@ -29,4 +29,14 @@ public interface ProjectGroupMapper extends BaseMapper<ProjectGroup> {
             ON project_group.staff_id = staff.staff_id AND project_group.project_id = #{projectId}
             """)
     List<ProjectGroupDTO> selectMembersByList(@Param("projectId") Integer projectId);
+
+    @Select("""
+            SELECT COUNT(task_id)
+            FROM task
+            WHERE task_project_id = #{projectId}
+                AND task_holder_id = #{staffId}
+                AND is_deleted = 0
+                AND (task_status = '待进行' OR task_status = '进行中');
+            """)
+    Long selectUnfinishedTaskCountByStaffId(@Param("projectId") Integer projectId, @Param("staffId") Integer staffId);
 }
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 d07f833..d4ee807 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
@@ -5,7 +5,9 @@ import cn.edu.hfut.rmdjzz.projectmanagement.entity.dto.StaffProcessDTO;
 import cn.edu.hfut.rmdjzz.projectmanagement.entity.dto.TaskDTO;
 import cn.edu.hfut.rmdjzz.projectmanagement.entity.dto.TaskNumOfEveryoneDTO;
 import cn.edu.hfut.rmdjzz.projectmanagement.entity.dto.TaskTrendDTO;
+import com.baomidou.mybatisplus.core.conditions.Wrapper;
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.baomidou.mybatisplus.core.toolkit.Constants;
 import org.apache.ibatis.annotations.Param;
 
 import java.time.LocalDate;
@@ -16,6 +18,8 @@ import java.util.List;
  * created at 2022/7/4 14:52
  */
 public interface TaskMapper extends BaseMapper<Task> {
+    List<TaskDTO> selectTaskList(@Param(Constants.WRAPPER) Wrapper<Task> wrapper);
+
     List<TaskDTO> selectSubTaskList(@Param("projectId") Integer projectId, @Param("fatherId") Long fatherId);
 
     List<StaffProcessDTO> selectProjectProcess(@Param("projectId") Integer projectId, @Param("staffId") Integer staffId);
diff --git a/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/service/IProjectGroupService.java b/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/service/IProjectGroupService.java
index cb579ca..1f940da 100644
--- a/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/service/IProjectGroupService.java
+++ b/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/service/IProjectGroupService.java
@@ -26,6 +26,8 @@ public interface IProjectGroupService extends IService<ProjectGroup> {
 
     Boolean insertNewMember(String token, Integer projectId, String staffUsername, String positions) throws ForbiddenException, BadRequestException;
 
+    Boolean removeMember(String token, Integer projectId, Integer targetId) throws ForbiddenException, BadRequestException;
+
     Boolean updateStaffPositions(String token, Integer projectId, Integer targetId, String positions) throws ForbiddenException;
 
     /**
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 ae8f902..1951822 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
@@ -38,7 +38,7 @@ public interface ITaskService extends IService<Task> {
      */
     Integer getHolderLevel(String token, Long taskId);
 
-    List<Task> listMyTasks(String token, Integer projectId) throws BadRequestException;
+    List<TaskDTO> listMyTasks(String token, Integer projectId) throws BadRequestException;
 
     Boolean canBeDone(Long taskId);
 
diff --git a/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/service/impl/AnnouncementServiceImpl.java b/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/service/impl/AnnouncementServiceImpl.java
index 7ba73ce..5a6eecc 100644
--- a/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/service/impl/AnnouncementServiceImpl.java
+++ b/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/service/impl/AnnouncementServiceImpl.java
@@ -45,7 +45,7 @@ public class AnnouncementServiceImpl extends ServiceImpl<AnnouncementMapper, Ann
             throw new ForbiddenException(ForbiddenException.UNABLE_TO_OPERATE);
         }
         Announcement rawAnnouncement = baseMapper.selectById(announcement.getAnnouncementId());
-        if (projectGroupService.compareProjectAccessLevel(projectId, token, rawAnnouncement.getAnnouncementPublisherId()) >= 0) {
+        if (projectGroupService.compareProjectAccessLevel(projectId, token, rawAnnouncement.getAnnouncementPublisherId()) <= 0) {
             if (!announcement.checkModification(rawAnnouncement)) {
                 throw new BadRequestException(BadRequestException.WRONG_PARAMETERS);
             }
diff --git a/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/service/impl/ProjectGroupServiceImpl.java b/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/service/impl/ProjectGroupServiceImpl.java
index fb9a848..b474e82 100644
--- a/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/service/impl/ProjectGroupServiceImpl.java
+++ b/src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/service/impl/ProjectGroupServiceImpl.java
@@ -60,6 +60,7 @@ public class ProjectGroupServiceImpl extends ServiceImpl<ProjectGroupMapper, Pro
         }
         String[] positionArray = positions.split(",");
         for (String position : positionArray) {
+            position = position.strip();
             if (position.equals(POSITION_1)) {
                 throw new ForbiddenException(ForbiddenException.UNABLE_TO_OPERATE);
             }
@@ -70,10 +71,25 @@ public class ProjectGroupServiceImpl extends ServiceImpl<ProjectGroupMapper, Pro
                 targetLevel = 2;
             }
         }
+        positions = String.join(",", positionArray);
 
         return baseMapper.insert(new ProjectGroup(targetStaff.getStaffId(), projectId, positions, targetLevel)) == 1;
     }
 
+    @Override
+    public Boolean removeMember(String token, Integer projectId, Integer targetId) throws ForbiddenException, BadRequestException {
+        if (compareProjectAccessLevel(projectId, token, targetId) >= 0) {
+            throw new ForbiddenException(ForbiddenException.UNABLE_TO_OPERATE);
+        }
+        Long taskUnfinishedCount = baseMapper.selectUnfinishedTaskCountByStaffId(projectId, targetId);
+        if (taskUnfinishedCount != 0) {
+            throw new BadRequestException("该成员仍有未完成或未被关闭的工作项");
+        }
+        return baseMapper.delete(Wrappers.<ProjectGroup>lambdaQuery()
+                .eq(ProjectGroup::getProjectId, projectId)
+                .eq(ProjectGroup::getStaffId, targetId)) == 1;
+    }
+
     @Override
     public Boolean updateStaffPositions(String token, Integer projectId, Integer targetId, String positions) throws ForbiddenException {
         int accessLevel = getProjectAccessLevel(token, projectId);
@@ -87,13 +103,18 @@ public class ProjectGroupServiceImpl extends ServiceImpl<ProjectGroupMapper, Pro
         }
         String[] positionArray = positions.split(",");
         for (String position : positionArray) {
+            position = position.strip();
             if (position.equals(POSITION_1)) {
                 throw new ForbiddenException(ForbiddenException.UNABLE_TO_OPERATE);
             }
-            if (position.equals(POSITION_2) && accessLevel != 1) {
-                throw new ForbiddenException(ForbiddenException.UNABLE_TO_OPERATE);
+            if (position.equals(POSITION_2)) {
+                if (accessLevel != 1) {
+                    throw new ForbiddenException(ForbiddenException.UNABLE_TO_OPERATE);
+                }
+                targetLevel = 2;
             }
         }
+        positions = String.join(",", positionArray);
 
         return baseMapper.update(
                 null,
@@ -101,6 +122,7 @@ public class ProjectGroupServiceImpl extends ServiceImpl<ProjectGroupMapper, Pro
                         .eq(ProjectGroup::getProjectId, projectId)
                         .eq(ProjectGroup::getStaffId, targetId)
                         .set(ProjectGroup::getProjectStaffPosition, positions)
+                        .set(ProjectGroup::getProjectAccessLevel, targetLevel)
         ) == 1;
     }
 
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 f4fe048..35f3b41 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
@@ -220,13 +220,15 @@ public class TaskServiceImpl extends ServiceImpl<TaskMapper, Task> implements IT
 
 
     @Override
-    public List<Task> listMyTasks(String token, Integer projectId) throws BadRequestException {
+    public List<TaskDTO> listMyTasks(String token, Integer projectId) {
         Integer staffId = TokenUtils.getStaffId(token);
-        List<Task> resList = baseMapper.selectList(Wrappers.<Task>lambdaQuery().select(Task::getTaskId, Task::getTaskFatherId, Task::getTaskHolderId)
-                .eq(Task::getTaskProjectId, projectId).orderByAsc(Task::getTaskFatherId));
+        List<Task> resList = baseMapper.selectList(Wrappers.<Task>lambdaQuery()
+                .select(Task::getTaskId, Task::getTaskFatherId, Task::getTaskHolderId)
+                .eq(Task::getTaskProjectId, projectId)
+                .orderByAsc(Task::getTaskFatherId));
         List<Long> results = new ArrayList<>();
-        ArrayList<Long> vec = new ArrayList<>();
-        ArrayList<Boolean> isTarget = new ArrayList<>();
+        List<Long> vec = new ArrayList<>();
+        List<Boolean> isTarget = new ArrayList<>();
         vec.add(0L);
         isTarget.add(false);
         int id = 0;
@@ -247,7 +249,9 @@ public class TaskServiceImpl extends ServiceImpl<TaskMapper, Task> implements IT
                 isTarget.add(resList.get(i).getTaskHolderId().equals(staffId));
             }
         }
-        return baseMapper.selectList(Wrappers.<Task>lambdaQuery().in(Task::getTaskId, results));
+        return baseMapper.selectTaskList(Wrappers.<Task>lambdaQuery()
+                .eq(Task::getDeleted, false)
+                .in(Task::getTaskId, results));
     }
 
     @Override
@@ -323,7 +327,7 @@ public class TaskServiceImpl extends ServiceImpl<TaskMapper, Task> implements IT
             throw new BadRequestException(BadRequestException.WRONG_PARAMETERS);
         }
         if (typeChangeValue == 1 && !canBeDone(task.getTaskId())) {
-            throw new BadRequestException("还有子工作尚未完成");
+            throw new BadRequestException("还有子工作项尚未完成");
         }
         try {
             boolean closed = false;
diff --git a/src/main/resources/mapper/TaskMapper.xml b/src/main/resources/mapper/TaskMapper.xml
index aec90be..9686caa 100644
--- a/src/main/resources/mapper/TaskMapper.xml
+++ b/src/main/resources/mapper/TaskMapper.xml
@@ -6,6 +6,27 @@
         <result property="attachedInfo" column="attached_info"
                 typeHandler="com.baomidou.mybatisplus.extension.handlers.JacksonTypeHandler"/>
     </resultMap>
+    <select id="selectTaskList" resultMap="taskDto">
+        SELECT task_id,
+               task_name,
+               task_project_id,
+               task_holder_id,
+               s.staff_fullname AS task_holder_name,
+               task_status,
+               task_type,
+               t.task_father_id,
+               task_created_time,
+               task_start_time,
+               task_end_time,
+               task_closed_time,
+               task_priority,
+               task_description,
+               attached_info,
+               children_count
+        FROM task AS t
+                 JOIN (SELECT staff_id, staff_fullname FROM staff) AS s ON t.task_holder_id = s.staff_id
+            ${ew.customSqlSegment}
+    </select>
     <select id="selectSubTaskList" resultMap="taskDto">
         SELECT task_id,
                task_name,
@@ -43,7 +64,8 @@
         </if>
         GROUP BY task_type
     </select>
-    <select id="selectProjectProcessOfEveryone" resultType="cn.edu.hfut.rmdjzz.projectmanagement.entity.dto.TaskNumOfEveryoneDTO">
+    <select id="selectProjectProcessOfEveryone"
+            resultType="cn.edu.hfut.rmdjzz.projectmanagement.entity.dto.TaskNumOfEveryoneDTO">
         SELECT staff_fullname, completed_num
         FROM (SELECT task_holder_id, SUM(IF(task_closed_time IS NULL, 0, 1)) AS completed_num
               FROM task