diff --git a/module/doc/control.php b/module/doc/control.php
index 3a42bd0932..5b30917108 100644
--- a/module/doc/control.php
+++ b/module/doc/control.php
@@ -143,6 +143,7 @@ class doc extends control
         if($module) $title = $module->name;
         if($libID)  $title = $this->libs[$libID];
         if(in_array($browseType, array_keys($this->lang->doc->fastMenuList))) $title = $this->lang->doc->fastMenuList[$browseType];
+        if($param)  $title = $this->doc->buildBreadTitle($libID, $param, $title);
         if($browseType == 'fastsearch')
         {
             if($this->post->searchDoc) $this->session->set('searchDoc', $this->post->searchDoc);
@@ -160,7 +161,7 @@ class doc extends control
             $this->view->itemCounts = $this->doc->statLibCounts(array_keys($libs));
         }
 
-        $this->view->title      = $title;
+        $this->view->breadTitle = $title;
         $this->view->libID      = $libID;
         $this->view->moduleID   = $moduleID;
         $this->view->modules    = $this->doc->getDocMenu($libID, $moduleID, $orderBy == 'title_asc' ? 'name_asc' : 'id_desc', $browseType);
diff --git a/module/doc/css/common.css b/module/doc/css/common.css
index b0dcd89fc1..f9b6058e2e 100644
--- a/module/doc/css/common.css
+++ b/module/doc/css/common.css
@@ -59,3 +59,4 @@
 }
 
 .main-col > .panel > .panel-body {padding-top: 20px;}
+.main-col .panel-title a.active{color: #0c64eb}
diff --git a/module/doc/model.php b/module/doc/model.php
index 94447175dc..9e56f199c8 100644
--- a/module/doc/model.php
+++ b/module/doc/model.php
@@ -1528,4 +1528,52 @@ class docModel extends model
 
         return $statisticInfo;
     }
+
+    /**
+     * Print doc child module.
+     *
+     * @access public
+     */
+    public function printChildModule($module, $libID, $methodName, $browseType, $moduleID)
+    {
+        if(isset($module->children))
+        {
+            foreach($module->children as $childModule)
+            {
+                $active = '';
+                if($methodName == 'browse' && $browseType == 'bymodule' && $moduleID == $childModule->id) $active = "class='active'";
+                echo '<ul>';
+                echo "<li $active>";
+                echo html::a(helper::createLink('doc', 'browse', "libID=$libID&browseType=byModule&param={$childModule->id}"), "<i class='icon icon-folder-outline'></i> " . $childModule->name, '', "class='text-ellipsis' title='{$childModule->name}'");
+                if(isset($childModule->children)) $this->printChildModule($childModule, $libID, $methodName, $browseType, $moduleID);
+                echo '</li>';
+                echo '</ul>';
+            }
+        }
+    }
+
+    /**
+     * Build doc bread title.
+     *
+     * @access public
+     * @return string 
+     */
+    public function buildBreadTitle($libID = 0, $param = 0, $title = '')
+    {
+        $path = $this->dao->select('path')->from(TABLE_MODULE)->where('id')->eq($param)->fetch('path');
+
+        $parantMoudles = $this->dao->select('id, name')->from(TABLE_MODULE)
+            ->where('id')->in($path)
+            ->andWhere('deleted')->eq(0)
+            ->fetchAll('id');
+
+        foreach($parantMoudles as $parentID => $moduleName)
+        {
+            $active = '';
+            if($param == $parentID) $active = "class='active'";
+            $title .= html::a(helper::createLink('doc', 'browse', "libID=$libID&browseType=byModule&param={$parentID}"), ' > ' . $moduleName->name , '', "$active");
+        } 
+
+        return $title;
+    }
 }
diff --git a/module/doc/view/browse.html.php b/module/doc/view/browse.html.php
index cc9899492e..ac9dc9c5e3 100644
--- a/module/doc/view/browse.html.php
+++ b/module/doc/view/browse.html.php
@@ -36,7 +36,7 @@ var browseType = '<?php echo $browseType;?>';
           <?php else:?>
           <i class="icon icon-search text-muted"></i>
           <?php endif;?>
-          <?php echo $title;?>
+          <?php echo $breadTitle;?>
         </div>
         <nav class="panel-actions btn-toolbar">
           <div class="btn-group">
diff --git a/module/doc/view/side.html.php b/module/doc/view/side.html.php
index 4733895c86..38980a7710 100644
--- a/module/doc/view/side.html.php
+++ b/module/doc/view/side.html.php
@@ -6,6 +6,11 @@ $allModules = $this->loadModel('tree')->getDocStructure();
 
 $productSubLibs = $this->doc->getSubLibGroups('product', array_keys($products));
 $projectSubLibs = $this->doc->getSubLibGroups('project', array_keys($projects));
+if($this->methodName != 'browse')
+{
+    $browseType = '';
+    $moduleID   = '';
+}
 ?>
 <div class="side-col" style="width: 220px" data-min-width="220">
   <div class="cell">
@@ -62,8 +67,10 @@ $projectSubLibs = $this->doc->getSubLibGroups('project', array_keys($projects));
                 <?php if(isset($allModules[$subLibID])):?>
                 <ul>
                   <?php foreach($allModules[$subLibID] as $module):?>
+                  <?php if($module->parent != 0) continue;?>
                   <li <?php if($this->methodName == 'browse' && $browseType == 'bymodule' && $moduleID == $module->id) echo "class='active'";?>>
                     <?php echo html::a($this->createLink('doc', 'browse', "libID=$subLibID&browseType=byModule&param={$module->id}"), "<i class='icon icon-folder-outline'></i> " . $module->name, '', "class='text-ellipsis' title='{$module->name}'");?>
+                    <?php $this->doc->printChildModule($module, $subLibID, $this->methodName, $browseType, $moduleID);?>
                   </li>
                   <?php endforeach;?>
                 </ul>
@@ -106,8 +113,10 @@ $projectSubLibs = $this->doc->getSubLibGroups('project', array_keys($projects));
                 <?php if(isset($allModules[$subLibID])):?>
                 <ul>
                   <?php foreach($allModules[$subLibID] as $module):?>
+                  <?php if($module->parent != 0) continue;?>
                   <li <?php if($this->methodName == 'browse' && $browseType == 'bymodule' && $moduleID == $module->id) echo "class='active'";?>>
                     <?php echo html::a($this->createLink('doc', 'browse', "libID=$subLibID&browseType=byModule&param={$module->id}"), "<i class='icon icon-folder-outline'></i> " . $module->name, '', "class='text-ellipsis' title='{$module->name}'");?>
+                  <?php $this->doc->printChildModule($module, $subLibID, $this->methodName, $browseType, $moduleID);?>
                   </li>
                   <?php endforeach;?>
                 </ul>
@@ -130,8 +139,10 @@ $projectSubLibs = $this->doc->getSubLibGroups('project', array_keys($projects));
             <?php if(isset($allModules[$subLibID])):?>
             <ul>
               <?php foreach($allModules[$subLibID] as $module):?>
+              <?php if($module->parent != 0) continue;?>
               <li <?php if($this->methodName == 'browse' && $browseType == 'bymodule' && $moduleID == $module->id) echo "class='active'";?>>
                 <?php echo html::a($this->createLink('doc', 'browse', "libID=$subLibID&browseType=byModule&param={$module->id}"), "<i class='icon icon-folder-outline'></i> " . $module->name, '', "class='text-ellipsis' title='{$module->name}'");?>
+                <?php $this->doc->printChildModule($module, $subLibID, $this->methodName, $browseType, $moduleID);?>
               </li>
               <?php endforeach;?>
             </ul>
diff --git a/module/tree/model.php b/module/tree/model.php
index 3dcfa71dc6..247a73c14d 100644
--- a/module/tree/model.php
+++ b/module/tree/model.php
@@ -1666,11 +1666,18 @@ class treeModel extends model
             {
                 foreach($module->children as $children)
                 {
-                    if($children->parent != 0) continue;//Filter project children modules.
+                    if($children->parent != 0 && !empty($tree[$root])) 
+                    {
+                        foreach($tree[$root] as $firstChildren)
+                        {
+                            if($firstChildren->id == $children->parent) $firstChildren->children[] = $children;
+                        }
+                    };//Filter project children modules.
                     $tree[$root][] = $children;
                 }
             }
         }
+
         return $tree;
     }
 }