diff --git a/pmapi/src/main/java/com/ningdatech/pmapi/todocenter/manage/TodoCenterManage.java b/pmapi/src/main/java/com/ningdatech/pmapi/todocenter/manage/TodoCenterManage.java
index 63d65cd..f571c4a 100644
--- a/pmapi/src/main/java/com/ningdatech/pmapi/todocenter/manage/TodoCenterManage.java
+++ b/pmapi/src/main/java/com/ningdatech/pmapi/todocenter/manage/TodoCenterManage.java
@@ -14,10 +14,13 @@ import com.ningdatech.pmapi.projectdeclared.manage.DeclaredProjectManage;
 import com.ningdatech.pmapi.todocenter.handle.WithDrawHandle;
 import com.wflow.workflow.enums.ProcessHandlerEnum;
 import org.apache.commons.io.FileUtils;
+import org.apache.commons.lang3.StringUtils;
 import org.assertj.core.util.Lists;
 import org.flowable.engine.HistoryService;
 import org.flowable.engine.RuntimeService;
+import org.flowable.engine.TaskService;
 import org.flowable.engine.history.HistoricProcessInstance;
+import org.flowable.engine.task.Comment;
 import org.flowable.variable.api.history.HistoricVariableInstance;
 import org.springframework.beans.BeanUtils;
 import org.springframework.mock.web.MockMultipartFile;
@@ -81,9 +84,7 @@ import com.ningdatech.pmapi.todocenter.service.StatisticsService;
 import com.ningdatech.pmapi.todocenter.utils.BuildUserUtils;
 import com.ningdatech.pmapi.todocenter.utils.PdfUtils;
 import com.ningdatech.pmapi.user.security.auth.model.UserFullInfoDTO;
-import com.ningdatech.pmapi.user.service.IUserInfoService;
 import com.ningdatech.pmapi.user.util.LoginUserUtil;
-import com.wflow.contants.ProcessConstant;
 import com.wflow.exception.BusinessException;
 import com.wflow.workflow.bean.dto.ReqProcessHandlerDTO;
 import com.wflow.workflow.bean.dto.TodoCenterListReqDTO;
@@ -123,14 +124,12 @@ public class TodoCenterManage {
     private final IProjectApplicationService projectApplicationService;
     private final UserInfoHelper userInfoHelper;
     private final BuildUserUtils buildUserUtils;
-    private final IProjectStagingService projectStagingService;
+    private final TaskService taskService;
     private final IProjectInstService projectInstService;
     private final PdfUtils pdfUtils;
     private final FileService fileService;
     private final ICompanySignatureService companySignatureService;
     private final StatisticsService statisticsService;
-    private final INotifyService notifyService;
-    private final DeclaredProjectManage declaredProjectManage;
 
     private final HandlerManage handlerManage;
 
@@ -897,6 +896,17 @@ public class TodoCenterManage {
                 if(approve.getValue() instanceof ProcessHandlerEnum){
                     if(ProcessHandlerEnum.BACK.equals(ProcessHandlerEnum.getEnumByName(String.valueOf(approve.getValue())))){
                         runtimeService.removeVariable(approve.getProcessInstanceId(),approve.getVariableName());
+
+                        Comment comment;
+                        Optional<Comment> first = taskService.getProcessInstanceComments(approve.getProcessInstanceId())
+                                .stream()
+                                .filter(c -> c.getTaskId().equals(approve.getVariableName().replace("approve_", StringUtils.EMPTY)))
+                                .findFirst();
+                        if (first.isPresent()){
+                            comment = first.get();
+                            taskService.deleteComment(comment.getId());
+                        }
+
                         break;
                     }
                 }