diff --git a/public/react/src/modules/courses/poll/PollDetailIndex.js b/public/react/src/modules/courses/poll/PollDetailIndex.js
index 9119b7902..6106e5ea2 100644
--- a/public/react/src/modules/courses/poll/PollDetailIndex.js
+++ b/public/react/src/modules/courses/poll/PollDetailIndex.js
@@ -123,7 +123,7 @@ class PollDetailIndex extends Component{
 				/>
 				<div className="educontent mt10 mb50">
 					<p className="clearfix mb20">
-						<WordsBtn style="grey" className="fl" to={current_user.first_category_url}>{this.props.coursedata.name}</WordsBtn>
+						<WordsBtn style="grey" className="fl" to={current_user && current_user.first_category_url}>{this.props.coursedata.name}</WordsBtn>
 						<span className="color-grey-9 fl ml3 mr3">&gt;</span>
 						<WordsBtn style="grey" className="fl" to={`/courses/${this.props.match.params.coursesId}/polls/${user_permission && user_permission.left_banner_id}`}>问卷</WordsBtn>
 						<span className="color-grey-9 fl ml3 mr3">&gt;</span>
diff --git a/public/react/src/modules/courses/poll/PollDetailTabSecond.js b/public/react/src/modules/courses/poll/PollDetailTabSecond.js
index a6a2b6b62..45b3c1583 100644
--- a/public/react/src/modules/courses/poll/PollDetailTabSecond.js
+++ b/public/react/src/modules/courses/poll/PollDetailTabSecond.js
@@ -127,9 +127,9 @@ class PollDetailTabSecond extends Component{
                         <span className="color-green">{options.answer_users_count}</span>  
                         <span>
                           <p className="percentForm fl mr15">
-                            <span className="percentValue" style={{"width":`${parseFloat(options.answer_percent ? options.answer_percent : 0 ).toFixed(2)*100}%`}}></span>
+                            <span className="percentValue" style={{"width":`${options.answer_percent * 100}%`}}></span>
                           </p>
-                          <font className="color-grey-9">{parseFloat(options.answer_percent ? options.answer_percent : 0 ).toFixed(2)*100} %</font>
+                          <font className="color-grey-9">{options.answer_percent * 100}%</font>
                         </span>
                       </ul>
                       {
diff --git a/public/react/src/modules/courses/poll/PollInfo.js b/public/react/src/modules/courses/poll/PollInfo.js
index f32d652c2..22c1f542e 100644
--- a/public/react/src/modules/courses/poll/PollInfo.js
+++ b/public/react/src/modules/courses/poll/PollInfo.js
@@ -315,7 +315,7 @@ class PollInfo extends Component{
         ></Modals>
         <div className="educontent mt10 mb50">
           <p className="clearfix mb20">
-            <WordsBtn style="grey" className="fl" to={current_user.first_category_url}>{courseName}</WordsBtn>
+            <WordsBtn style="grey" className="fl" to={current_user && current_user.first_category_url}>{courseName}</WordsBtn>
             <span className="color-grey-9 fl ml3 mr3">&gt;</span>
             <WordsBtn style="grey" className="fl" to={`/courses/${this.props.match.params.coursesId}/polls/${poll && poll.left_banner_id}`}>问卷</WordsBtn>
             <span className="color-grey-9 fl ml3 mr3">&gt;</span>
diff --git a/public/react/src/modules/courses/poll/PollNew.js b/public/react/src/modules/courses/poll/PollNew.js
index 705b1658c..be904afe7 100644
--- a/public/react/src/modules/courses/poll/PollNew.js
+++ b/public/react/src/modules/courses/poll/PollNew.js
@@ -2322,7 +2322,7 @@ class PollNew extends Component {
 	gotohome=()=>{
 		const { current_user} = this.props
 
-		this.props.history.push(current_user.first_category_url);
+		this.props.history.push(current_user && current_user.first_category_url);
 		
 
 		// let courseId=this.props.match.params.coursesId;