diff --git a/public/react/src/modules/page/MainContentContainer.js b/public/react/src/modules/page/MainContentContainer.js
index 3214fe5d5..f50ec9d21 100644
--- a/public/react/src/modules/page/MainContentContainer.js
+++ b/public/react/src/modules/page/MainContentContainer.js
@@ -224,12 +224,15 @@ class MainContentContainer extends Component {
     }
 
 	componentDidUpdate(prevProps, prevState, snapshot) {
-        const { game  } = this.props
+        const { game, challenge  } = this.props
         
 		if (game && prevProps.game 
 				&& prevProps.game.identifier !== game.identifier) {   
 			// 切换关卡时，停止轮训
 			this.oldGameIdentifier = prevProps.game.identifier;
+			this.doFileUpdateRequestOnCodeMirrorBlur(prevProps)
+		} else if (challenge && (challenge.pathIndex || prevProps.challenge.pathIndex) && challenge.pathIndex != prevProps.challenge.pathIndex) {
+			this.doFileUpdateRequestOnCodeMirrorBlur(prevProps)
 		}
         
     }
@@ -386,8 +389,8 @@ class MainContentContainer extends Component {
 	}
 	
 
-	doFileUpdateRequestOnCodeMirrorBlur = () => {
-		var fileUpdatePromise = this.doFileUpdateRequest(true)
+	doFileUpdateRequestOnCodeMirrorBlur = (props) => {
+		var fileUpdatePromise = this.doFileUpdateRequest(true, undefined, props)
         if (fileUpdatePromise) {
         	fileUpdatePromise.then((resData) => {
         		if (resData.status === -1) { // 保存文件出现异常
@@ -496,7 +499,8 @@ class MainContentContainer extends Component {
 	}
 
 	// forTest true  是评测时触发的file_update
-	doFileUpdateRequest(checkIfCodeChanged, forTest) {
+	doFileUpdateRequest(checkIfCodeChanged, forTest, props) {
+		const _props = props || this.props;
 		const { codeStatus } = this.state;
 		if (!forTest && codeStatus !== UPDATED) {	// 已修改状态才能保存
 			return;
@@ -521,7 +525,7 @@ class MainContentContainer extends Component {
 			})
 			return null;
 		}
-		const { challenge, output_sets, onRunCodeTestFinish, myshixun } = this.props
+		const { challenge, output_sets, onRunCodeTestFinish, myshixun } = _props
 		// var url = `${locationPath}/file_update?path=${encodeURIComponent(challenge.path)}`
 		var url = `/myshixuns/${myshixun.identifier}/update_file.json`