diff --git a/public/react/src/modules/courses/shixunHomework/Listofworks.js b/public/react/src/modules/courses/shixunHomework/Listofworks.js
index ca1bcc1a0..4e0497a24 100644
--- a/public/react/src/modules/courses/shixunHomework/Listofworks.js
+++ b/public/react/src/modules/courses/shixunHomework/Listofworks.js
@@ -1369,7 +1369,7 @@ class Listofworks extends Component {
 				downloadElement.href = href
 				var now="";
 				try {
-					now = moment().year()+""+moment().month()+""+moment().date();
+					now = moment().year()+""+moment().month()+""+moment().date()+""+moment().hour()+""+moment().minute()+""+moment().second();
 					console.log("1422");
 					console.log(now);
 
@@ -1426,7 +1426,7 @@ class Listofworks extends Component {
         const  string = Base64.decode(response.headers['content-disposition'].split('=')[1]);
 				var now="";
         try {
-					now = moment().year()+""+moment().month()+""+moment().date();
+					now = moment().year()+""+moment().month()+""+moment().date()+""+moment().hour()+""+moment().minute()+""+moment().second();
 					console.log("1422");
 					console.log(now);
 
diff --git a/public/react/src/modules/courses/shixunHomework/shixunHomework.js b/public/react/src/modules/courses/shixunHomework/shixunHomework.js
index 9bf0d12a4..42f5fbf6a 100644
--- a/public/react/src/modules/courses/shixunHomework/shixunHomework.js
+++ b/public/react/src/modules/courses/shixunHomework/shixunHomework.js
@@ -1132,7 +1132,7 @@ class ShixunHomework extends Component{
 
                   {course_modules&&course_modules.main_category.map((item,key)=>{
                     return(
-											datas&&datas.category_id===null?"":<li key={key} id={item.main_category_id} onClick={() => this.moveTos(item.main_category_id)}>{item.main_category_name}</li>:""
+											datas&&datas.category_id===null?"":<li key={key} id={item.main_category_id} onClick={() => this.moveTos(item.main_category_id)}>{item.main_category_name}</li>
 									)
                   })}