diff --git a/public/react/src/modules/page/MainContent.js b/public/react/src/modules/page/MainContent.js
index afd0d2d9..9f4b9fd4 100644
--- a/public/react/src/modules/page/MainContent.js
+++ b/public/react/src/modules/page/MainContent.js
@@ -80,7 +80,7 @@ class MainContent extends Component {
 									.page--body {  z-index: ${showIframeContent ? '9999': '1'} ;		}
 									.b-label>.resize-helper  { top: ${showIframeContent ? '10px': '50%'} }
 								`}</style>
-								{ showIframeContent ? <iframe src="https://106.75.27.125:42288/vnc.html" id="contentIframe" ></iframe> : 
+								{ showIframeContent ? <iframe src="http://106.75.27.125:42288/vnc.html" id="contentIframe" ></iframe> : 
 								<React.Fragment>
 		      			{/* 旧版本、评测等待提示--更新提示块*/}
 		      			{/*<div className="tip-panel-animate clearfix user_bg_shadow bor-grey-e">