diff --git a/module/doc/control.php b/module/doc/control.php
index 47642c5548..208ab5dd89 100644
--- a/module/doc/control.php
+++ b/module/doc/control.php
@@ -527,12 +527,6 @@ class doc extends control
             if(!(defined('RUN_MODE') && RUN_MODE == 'api')) $this->locate($browseLink);
         }
 
-        if($doc->contentType == 'markdown')
-        {
-            $doc->content = commonModel::processMarkdown($doc->content);
-            $doc->digest  = commonModel::processMarkdown($doc->digest);
-        }
-
         /* Check priv when lib is product or project. */
         $lib  = $this->doc->getLibByID($doc->lib);
         $type = $lib->type;
@@ -998,12 +992,6 @@ class doc extends control
                 $doc->keywords = str_replace("，", ',', $doc->keywords);
                 $doc->keywords = explode(',', $doc->keywords);
             }
-
-            if($doc->contentType == 'markdown')
-            {
-                $doc->content = commonModel::processMarkdown($doc->content);
-                $doc->digest  = commonModel::processMarkdown($doc->digest);
-            }
         }
 
         if(isset($doc) and ($doc->type == 'text' || $doc->type == 'article'))
diff --git a/module/doc/css/objectlibs.css b/module/doc/css/objectlibs.css
index 01c2431ed2..0215993c68 100644
--- a/module/doc/css/objectlibs.css
+++ b/module/doc/css/objectlibs.css
@@ -18,6 +18,8 @@
 #content .title {max-width: 54%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;}
 #content .detail-content {padding-left: 10px;}
 #mainContent .scrollbar-hover {max-height: 2000px; overflow: scroll;}
+#content .editor-preview {background: #fff}
+#content .CodeMirror{border: none}
 #sidebar {width: 275px;}
 #sidebar>.cell {width: 100%;}
 #sidebar>.sidebar-toggle {left: 3px; right: auto;}
diff --git a/module/doc/view/content.html.php b/module/doc/view/content.html.php
index d1ecb68883..c627cecee1 100644
--- a/module/doc/view/content.html.php
+++ b/module/doc/view/content.html.php
@@ -100,6 +100,10 @@
                     echo "</div></div>";
                 }
             }
+            elseif($doc->contentType == 'markdown')
+            {
+                echo "<textarea id='markdownContent' /></textarea>";
+            }
             else
             {
                 echo $doc->content;
@@ -283,3 +287,16 @@
 </div>
 <?php endif;?>
 <?php include '../../common/view/syntaxhighlighter.html.php';?>
+<?php if($doc->contentType == 'markdown'):?>
+<?php css::import($jsRoot . "markdown/simplemde.min.css");?>
+<?php js::import($jsRoot . 'markdown/simplemde.min.js'); ?>
+<?php js::set('markdownText', $doc->content);?>
+<script>
+$(function()
+{
+    var simplemde = new SimpleMDE({element: $("#markdownContent")[0],toolbar:false, status: false});
+    simplemde.value(markdownText);
+    simplemde.togglePreview();
+})
+</script>
+<?php endif;?>