diff --git a/src/main/java/com/xdap/self_development/controller/ActivitiProcessController.java b/src/main/java/com/xdap/self_development/controller/ActivitiProcessController.java
index e8bcaad..a30de59 100644
--- a/src/main/java/com/xdap/self_development/controller/ActivitiProcessController.java
+++ b/src/main/java/com/xdap/self_development/controller/ActivitiProcessController.java
@@ -59,6 +59,12 @@ public class ActivitiProcessController {
         PageResultDTO msg =  engineReviewListService.selectEngineReviewListByUserId(userID,page,size,ycOrOth);
         return Response.ok().data(msg);
     };
+    //申请人退回审批
+    @GetMapping(value = "/returnApproval")
+    public Response returnApproval(@RequestParam(value = "approvalId") String approvalId) {
+        String msg =  engineReviewListService.returnApproval(approvalId);
+        return Response.ok().data(msg);
+    };
 
 //
 //    //查询删除所有部署信息（谨慎使用）
diff --git a/src/main/java/com/xdap/self_development/service/EngineReviewListService.java b/src/main/java/com/xdap/self_development/service/EngineReviewListService.java
index 62a1288..7da123e 100644
--- a/src/main/java/com/xdap/self_development/service/EngineReviewListService.java
+++ b/src/main/java/com/xdap/self_development/service/EngineReviewListService.java
@@ -7,4 +7,7 @@ import com.xdap.self_development.pojo.dto.PageResultDTO;
 public interface EngineReviewListService {
     //查看机型审批列表
     PageResultDTO<EngineReviewListPojo> selectEngineReviewListByUserId(String userId,Integer page,Integer size,String ycOrOth);
+    //撤回审批（只有发起人在没有被人审批时可以撤回）
+    String returnApproval(String approvalId);
+
 }
diff --git a/src/main/java/com/xdap/self_development/service/impl/EngineReviewListServiceImpl.java b/src/main/java/com/xdap/self_development/service/impl/EngineReviewListServiceImpl.java
index 48fe67d..d81cd12 100644
--- a/src/main/java/com/xdap/self_development/service/impl/EngineReviewListServiceImpl.java
+++ b/src/main/java/com/xdap/self_development/service/impl/EngineReviewListServiceImpl.java
@@ -2,7 +2,11 @@ package com.xdap.self_development.service.impl;
 
 import com.definesys.mpaas.query.MpaasQueryFactory;
 import com.xdap.api.moudle.user.pojo.XdapUsers;
+import com.xdap.self_development.enums.ParamValueVersionEnum;
+import com.xdap.self_development.pojo.ApprovalConfigPojo;
 import com.xdap.self_development.pojo.EngineReviewListPojo;
+import com.xdap.self_development.pojo.ParamApprovalRecordPojo;
+import com.xdap.self_development.pojo.TodoTaskPojo;
 import com.xdap.self_development.pojo.dto.PageResultDTO;
 import com.xdap.self_development.service.EngineReviewListService;
 import com.xdap.self_development.service.XdapDeptUsersService;
@@ -15,6 +19,7 @@ import org.springframework.stereotype.Service;
 
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Date;
 import java.util.List;
 import java.util.stream.Collectors;
 
@@ -72,4 +77,44 @@ public class EngineReviewListServiceImpl implements EngineReviewListService {
         pageResultDTO.setTotalCount(totalCount);
         return pageResultDTO;
     }
+
+    //撤回审批
+    @Override
+    public String returnApproval(String approvalId) {
+        if (StringUtils.isEmpty(approvalId)) {
+            throw new RuntimeException("未传入审批流ID");
+        }
+        //如果这个审批流没有被审批过
+        boolean b = true;
+        List<EngineReviewListPojo> engineReviewListPojos = sw.buildFromDatasource("xdap_app_223770822127386625")
+                .eq("id", approvalId)
+                .doQuery(EngineReviewListPojo.class);
+        if (ObjectUtils.isEmpty(engineReviewListPojos)) {
+            throw new RuntimeException("审批流未找到");
+        }
+        String nodeName = engineReviewListPojos.get(0).getNodeName();
+        // 获取环节
+        List<ParamApprovalRecordPojo> paramApprovalRecordPojos = sw.buildFromDatasource("xdap_app_223770822127386625")
+                .eq("approval_id", approvalId)
+                .doQuery(ParamApprovalRecordPojo.class);
+        if (paramApprovalRecordPojos.stream().anyMatch(x -> x.getOperator().equals("同意"))) {
+            b = false;
+        }
+        if (b) {
+            // 更新审批流状态为已撤回
+            sw.buildFromDatasource("xdap_app_223770822127386625")
+                    .update("status_code", ParamValueVersionEnum.WITHDRAWN.getCode())
+                    .update("status_description", ParamValueVersionEnum.WITHDRAWN.getDesc())
+                    .update("approver_persons", "")
+                    .update("last_update_date", new Date())
+                    .eq("id", approvalId).doUpdate(EngineReviewListPojo.class);
+            //删除审批人的待办
+            sw.buildFromDatasource("xdap_app_223770822127386625")
+                    .update("is_delete", 1)
+                    .update("last_update_date", new Date())
+                    .eq("document_no", approvalId).doUpdate(TodoTaskPojo.class);
+            return "撤回成功";
+        }
+        return "已经进入审批无法撤回";
+    }
 }