diff --git a/public/react/src/modules/courses/busyWork/CommonWorkList.js b/public/react/src/modules/courses/busyWork/CommonWorkList.js
index 6ab277e20..773fa52fe 100644
--- a/public/react/src/modules/courses/busyWork/CommonWorkList.js
+++ b/public/react/src/modules/courses/busyWork/CommonWorkList.js
@@ -100,7 +100,8 @@ function buildColumns(that, student_works) {
         <span>
           <a href="javascript:;"  
             title={record.student_id}
-            style={{color:'#9A9A9A', 'text-overflow': 'ellipsis', 'white-space': 'nowrap', 'width': '100px', display: 'block', overflow: 'hidden'}}
+            style={{color:'#9A9A9A', 'text-overflow': 'ellipsis', 'white-space': 'nowrap', 'width': '100px', display: 'block', overflow: 'hidden'
+                , margin: '0 auto'}}
           >{record.student_id}</a>
       </span>
       ),