diff --git a/public/react/src/modules/courses/poll/PollDetailTabForthRules.js b/public/react/src/modules/courses/poll/PollDetailTabForthRules.js
index cfcdfae4d..2a2ff218b 100644
--- a/public/react/src/modules/courses/poll/PollDetailTabForthRules.js
+++ b/public/react/src/modules/courses/poll/PollDetailTabForthRules.js
@@ -350,6 +350,12 @@ class PollDetailTabForthRules extends Component{
           <span className="fl pr20 color-grey-c with25">(学生收到{this.props.moduleName || (this.props.type==="Exercise"?"试卷":"问卷")}的时间)</span>
           <span className="fl color-grey-c">({this.props.moduleName == '作业' ? '学生“按时”提交作品的时间截点' : '学生可以答题的时间截点'})</span>
         </p>
+        {/* item宽度超长 */}
+        <style>{`
+          .setInfo .ant-select-selection--multiple .ant-select-selection__choice__content {
+            max-width: 300px;
+          }
+        `}</style>
         
         {
           rules && rules.length > 0 && rules.map((rule,r)=>{
@@ -383,7 +389,8 @@ class PollDetailTabForthRules extends Component{
                       `.ant-select{
                             min-width:200px,
                             min-heigth:200px
-                      }`
+                      }
+                      `
                     }
                   </style>
 									<Tooltip placement="bottom"