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 5d5ab02..ed598bb 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
@@ -15,7 +15,6 @@ import cn.edu.hfut.rmdjzz.projectmanagement.utils.http.ResponseList;
 import cn.edu.hfut.rmdjzz.projectmanagement.utils.http.ResponseMap;
 import com.baomidou.mybatisplus.core.toolkit.Wrappers;
 import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.Parameter;
 import lombok.SneakyThrows;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.*;
@@ -74,12 +73,13 @@ public class ProjectGroupController {
     }
 
     //TODO: test
+    @Operation(description = "body中只传staffUsername和projectStaffPosition")
     @SneakyThrows
     @PostMapping
     public ResponseMap addGroupMember(
             @RequestHeader(TokenUtils.HEADER_TOKEN) String token,
             @PathVariable Integer projectId,
-            @Parameter(description = "只传staffUsername和projectStaffPosition") @RequestBody GroupPositionVO groupPosition
+            @RequestBody GroupPositionVO groupPosition
     ) {
         if (projectGroupService.insertNewMember(token, projectId, groupPosition.getStaffUsername(), groupPosition.getProjectStaffPosition())) {
             return ResponseMap.ofSuccess();
@@ -87,14 +87,34 @@ public class ProjectGroupController {
         throw new BadRequestException(BadRequestException.OPERATE_FAILED);
     }
 
+    @SneakyThrows
+    @DeleteMapping("/{staffId}")
+    public ResponseMap deleteGroupMember(
+            @RequestHeader(TokenUtils.HEADER_TOKEN) String token,
+            @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))
+        ) {
+            return ResponseMap.ofSuccess();
+        }
+        throw new BadRequestException(BadRequestException.OPERATE_FAILED);
+    }
+
     //TODO: test
+    @Operation(description = "body中只传projectStaffPosition")
     @SneakyThrows
     @PutMapping("/{staffId}")
     public ResponseMap modifyDesignatedStaffPosition(
             @RequestHeader(TokenUtils.HEADER_TOKEN) String token,
             @PathVariable Integer projectId,
             @PathVariable Integer staffId,
-            @Parameter(description = "在body中只传projectStaffPosition") @RequestBody GroupPositionVO groupPosition
+            @RequestBody GroupPositionVO groupPosition
     ) {
         if (projectGroupService.updateStaffPositions(token, projectId, staffId, groupPosition.getProjectStaffPosition())) {
             return ResponseMap.ofSuccess();