diff --git a/making_school_asignment_app/lib/common/job/homework_details.dart b/making_school_asignment_app/lib/common/job/homework_details.dart
index d742283..c295124 100644
--- a/making_school_asignment_app/lib/common/job/homework_details.dart
+++ b/making_school_asignment_app/lib/common/job/homework_details.dart
@@ -185,6 +185,9 @@ class Students extends Object {
   @JsonKey(name: 'useTime')
   int? useTime;
 
+  @JsonKey(name: 'ttlSec')
+  String? ttlSec;
+
   Students(this.studentId,this.studentName,this.state,this.priorityAnnotate,this.kgtStu,this.kgtOkCount,this.kgtAnswerCount,this.zgtStu,this.zgtAnswerCount,this.zgtOkCount,this.allOk,this.kgtErrorCount,this.zgtErrorCount,this.zgtUnrated,this.allNotDone,this.queDtls,this.okRate,this.noAnswerCount,this.useTime,this.isAllCorrect);
 
   factory Students.fromJson(Map<String, dynamic> srcJson) => _$StudentsFromJson(srcJson);
@@ -227,6 +230,9 @@ class Dtls extends Object {
   @JsonKey(name: 'useTime')
   int useTime;
 
+  @JsonKey(name: 'lastAnswerTime')
+  String? lastAnswerTime;
+
   @JsonKey(name: 'annotatePicture')
   String? annotatePicture;
 
diff --git a/making_school_asignment_app/lib/common/utils/utils.dart b/making_school_asignment_app/lib/common/utils/utils.dart
index 223db1c..e938f50 100644
--- a/making_school_asignment_app/lib/common/utils/utils.dart
+++ b/making_school_asignment_app/lib/common/utils/utils.dart
@@ -152,6 +152,24 @@ class Utils {
       int okCount = stu.queDtls!.where((w) => w.state == 3).length;
       int ttlCount = stu.queDtls!.length;
       stu.okRate = Utils.calcRate(okCount, ttlCount);
+
+      var stuDtls = data.dtls.where((w) => w.studentId == stu.studentId);
+      var secList = [];
+      for(var sec in stuDtls){
+        if(sec.useTime >= 1){
+          var date = DateTime.parse(sec.lastAnswerTime!);
+          var lastSec =(date.difference(DateTime(1970)).inSeconds).floor();
+
+          secList.add(lastSec);
+          secList.add(lastSec - sec.useTime);
+        }
+      }
+     secList.sort();
+       var maxSec = secList.isNotEmpty?secList.last:0;
+      var minSec = secList.isNotEmpty?secList.first:0;
+      var secTime = secList.isNotEmpty?maxSec-minSec:0;
+      stu.ttlSec = second2HMS(secTime);
+
     }
 
     data.students.sort((a, b) {
diff --git a/making_school_asignment_app/lib/page/home_page/children/quick_data_check/widget/quick_data_check_bottom.dart b/making_school_asignment_app/lib/page/home_page/children/quick_data_check/widget/quick_data_check_bottom.dart
index a490d8f..6bbbbc8 100644
--- a/making_school_asignment_app/lib/page/home_page/children/quick_data_check/widget/quick_data_check_bottom.dart
+++ b/making_school_asignment_app/lib/page/home_page/children/quick_data_check/widget/quick_data_check_bottom.dart
@@ -232,7 +232,7 @@ class _QuickDataCheckBottomState extends State<QuickDataCheckBottom> {
             return SizedBox(
               height: showList.value.length > 5 ? 350.r : showList.value.length * 50.r + 40.r,
               child: QuickStudentDataTable(
-                headList: ['学生姓名', '客观题', '主观题', '客观题状态', '主观题状态', '未批阅'],
+                headList: ['学生姓名', '总用时','客观题', '主观题', '客观题状态', '主观题状态', '未批阅'],
                 bodyList: showList.value,
                 jobId: widget.jobId,
                 fixedRows: 1,
diff --git a/making_school_asignment_app/lib/page/home_page/children/quick_data_check/widget/quick_student_data_table.dart b/making_school_asignment_app/lib/page/home_page/children/quick_data_check/widget/quick_student_data_table.dart
index 51f4f7f..b3f6475 100644
--- a/making_school_asignment_app/lib/page/home_page/children/quick_data_check/widget/quick_student_data_table.dart
+++ b/making_school_asignment_app/lib/page/home_page/children/quick_data_check/widget/quick_student_data_table.dart
@@ -72,6 +72,12 @@ class _QuickStudentDataTableState extends State<QuickStudentDataTable> {
             ),
           ),
         )),
+        DataCell(Center(
+          child: Padding(
+            padding: EdgeInsets.symmetric(horizontal: 5.r),
+            child:  Text(item.ttlSec.toString(), style: TextStyle(fontSize: 10.sp, color: const Color(0xFF525252), overflow: TextOverflow.ellipsis)),
+          ),
+        )),
         DataCell(Center(
           child: Padding(
             padding: EdgeInsets.symmetric(horizontal: 5.r),
@@ -203,7 +209,7 @@ class _QuickStudentDataTableState extends State<QuickStudentDataTable> {
         // onSelectAll: (val) => setState(() => selectAll(val)),
         columns: List.generate(widget.headList.length, (index) {
           var item = widget.headList[index];
-          return index == 1
+          return index == 2
               ? DataColumn2(
                   label: Row(mainAxisAlignment: MainAxisAlignment.center, crossAxisAlignment: CrossAxisAlignment.center, children: [
                     Text(item, style: TextStyle(fontSize: 10.sp, color: Color(0xFF505767))),
@@ -212,7 +218,7 @@ class _QuickStudentDataTableState extends State<QuickStudentDataTable> {
                   // size: ColumnSize.S,
                   fixedWidth: (MediaQuery.of(context).size.width - 20.r - 28.r) / widget.headList.length,
                 )
-              : index == 2
+              : index == 3
                   ? DataColumn2(
                       label: Row(mainAxisAlignment: MainAxisAlignment.center, crossAxisAlignment: CrossAxisAlignment.center, children: [
                         Text(item, style: TextStyle(fontSize: 10.sp, color: Color(0xFF505767))),