diff --git a/public/react/src/App.css b/public/react/src/App.css
index a6f1d45e7..2b3d8d08c 100644
--- a/public/react/src/App.css
+++ b/public/react/src/App.css
@@ -55,6 +55,10 @@ html, body {
 .markdown-body p {
   white-space: pre-wrap;
 }
+/* https://www.educoder.net/courses/2346/group_homeworks/34405/question */
+.renderAsHtml.markdown-body p {
+  white-space: inherit;
+}
 /* resize */
 .editormd .CodeMirror {
   border-right: none !important;
diff --git a/public/react/src/common/TextUtil.js b/public/react/src/common/TextUtil.js
index 4c83131f1..74cdef3e6 100644
--- a/public/react/src/common/TextUtil.js
+++ b/public/react/src/common/TextUtil.js
@@ -9,6 +9,7 @@ export function markdownToHTML(oldContent, selector) {
     window.$('#md_div').html('')
     // markdown to html
     if (selector && oldContent && oldContent.startsWith('<p')) {  // 普通html处理
+        window.$('#' + selector).addClass('renderAsHtml')
         window.$('#' + selector).html(oldContent)
     } else {
         try {