diff --git a/public/react/src/modules/courses/exercise/Exercisesetting.js b/public/react/src/modules/courses/exercise/Exercisesetting.js
index 970cbbe02..ddb17b8b6 100644
--- a/public/react/src/modules/courses/exercise/Exercisesetting.js
+++ b/public/react/src/modules/courses/exercise/Exercisesetting.js
@@ -525,7 +525,7 @@ class Exercisesetting extends Component{
                 end_time:null
             })
         }else{
-            if(moment(date,"YYYY-MM-DD HH:mm") <= moment()){
+            if(dateString<moment().format('YYYY-MM-DD HH:mm')){
                 this.setState({
                     unit_e_tip:"截止时间不能早于当前时间",
                     e_flag:true
diff --git a/public/react/src/modules/courses/poll/PollDetailTabForth.js b/public/react/src/modules/courses/poll/PollDetailTabForth.js
index e5cbfdce7..e2456d6d9 100644
--- a/public/react/src/modules/courses/poll/PollDetailTabForth.js
+++ b/public/react/src/modules/courses/poll/PollDetailTabForth.js
@@ -33,6 +33,11 @@ function disabledDateTime() {
 		// disabledSeconds: () => [55, 56],
 	};
 }
+
+function disabledDate(current) {
+	return current && current < moment().endOf('day').subtract(1, 'days');
+}
+
 const dataformat="YYYY-MM-DD HH:mm";
 
 class PollDetailTabForth extends Component{
@@ -597,6 +602,7 @@ class PollDetailTabForth extends Component{
 																width={"240px"}
 																format="YYYY-MM-DD HH:mm"
 																disabledTime={disabledDateTime}
+																disabledDate={disabledDate}
 																onChange={this.onChangeTimeEnd}
 																value={ end_time && moment(end_time,dataformat) }
 																disabled={un_change_end == true ? this.props.isAdmin()?!flagPageEdit:true : !flagPageEdit }
diff --git a/public/react/src/modules/courses/poll/PollDetailTabForthRules.js b/public/react/src/modules/courses/poll/PollDetailTabForthRules.js
index c531d20b7..39176752b 100644
--- a/public/react/src/modules/courses/poll/PollDetailTabForthRules.js
+++ b/public/react/src/modules/courses/poll/PollDetailTabForthRules.js
@@ -447,7 +447,7 @@ class PollDetailTabForthRules extends Component{
                 </p>
               </div>
               <div className="fl mr20 yskspickersy">
-                <Tooltip placement="bottom" title={rule.e_timeflag ? this.props.isAdmin()?"截止时间已过，不能再修改":"":""}>
+                <Tooltip placement="bottom" title={rule.e_timeflag ? this.props.isAdmin()?"":"截止时间已过，不能再修改":""}>
                   <span>
                     <DatePicker
 											showToday={false}