diff --git a/public/react/src/modules/competition/Registration.js b/public/react/src/modules/competition/Registration.js
index f0fc873c8..91ab829a7 100644
--- a/public/react/src/modules/competition/Registration.js
+++ b/public/react/src/modules/competition/Registration.js
@@ -2,7 +2,8 @@ import React, {Component} from 'react';
 import {
 	BrowserRouter as Router,
 	Route,
-	Switch
+	Switch,
+	Link
 } from 'react-router-dom';
 import axios from 'axios';
 import moment from 'moment';
@@ -115,11 +116,35 @@ class Registration extends React.Component {
 						personal: result.data.personal,
 						enroll_ended: result.data.enroll_ended,
 						enrolled: result.data.enrolled,
-						teacher_staff: result.data.teacher_staff,
-						member_staff: result.data.member_staff,
-						mutiple_limited: result.data.member_staff.mutiple_limited,
-						teamutiple_limited: result.data.teacher_staff.mutiple_limited
+						teacher_staff: result.data.teacher_staff === undefined || result.data.teacher_staff === null ? undefined : result.data.teacher_staff,
+						member_staff: result.data.member_staff === undefined || result.data.member_staff === null ? undefined : result.data.member_staff,
+
 					})
+
+					try {
+						if (result.data.member_staff) {
+							this.setState({
+								mutiple_limited: result.data.member_staff.mutiple_limited,
+
+							})
+						}
+
+
+					} catch (e) {
+
+					}
+
+					try {
+						if (result.data.teacher_staff) {
+							this.setState({
+								teamutiple_limited: result.data.teacher_staff.mutiple_limited
+							})
+						}
+
+					} catch (e) {
+
+					}
+
 					if (result.data.enroll_ended === true) {
 						this.setState({
 							pint: 0
@@ -136,7 +161,8 @@ class Registration extends React.Component {
 				}
 			}
 		}).catch((error) => {
-			//// //////console.log(error);
+			console.log("GetenrollmentAPI");
+			console.log(error);
 		})
 	}
 
@@ -686,9 +712,11 @@ class Registration extends React.Component {
 
 					<div style={{marginBottom: '12px'}}>
 						<Breadcrumb separator=">">
-							<Breadcrumb.Item href="/newcompetitions">在线竞赛</Breadcrumb.Item>
-							<Breadcrumb.Item
-								href={`/newcompetitions/${this.props.match.params.identifier}/common_header`}>{competition_name === undefined || competition_name === null || competition_name === "" ? "全国高校计算机大赛" : competition_name}</Breadcrumb.Item>
+							<Breadcrumb.Item><Link to={"/newcompetitions"}>在线竞赛</Link></Breadcrumb.Item>
+							<Breadcrumb.Item><Link
+								to={`/newcompetitions/${this.props.match.params.identifier}/common_header`}>{competition_name === undefined || competition_name === null || competition_name === "" ? "全国高校计算机大赛" : competition_name}</Link></Breadcrumb.Item>
+							{/*<Breadcrumb.Item*/}
+							{/*	href={`/newcompetitions/${this.props.match.params.identifier}/common_header`}></Breadcrumb.Item>*/}
 							<Breadcrumb.Item>报名</Breadcrumb.Item>
 						</Breadcrumb>
 					</div>