diff --git a/module/port/control.php b/module/port/control.php
index 92d233bb53..d30963f48a 100644
--- a/module/port/control.php
+++ b/module/port/control.php
@@ -131,14 +131,23 @@ class port extends control
         $this->display();
     }
 
-    public function ajaxGetTbody($model = '', $pagerID)
+    /**
+     * Ajax get Tbody .
+     *
+     * @param  string $model
+     * @param  int    $pagerID
+     * @access public
+     * @return void
+     */
+    public function ajaxGetTbody($model = '', $lastID = 0, $pagerID = 1)
     {
         $this->loadModel($model);
         $importFields = $this->config->$model->templateFields;
         $fields       = $this->port->initFieldList($model, $importFields, false);
         $formatDatas  = $this->port->format($model);
         $datas        = $this->port->getPageDatas($formatDatas, $pagerID);
-        $html = $this->port->buildNextList($datas->datas, $fields);
+
+        $html = $this->port->buildNextList($datas->datas, $lastID, $fields, $pagerID);
         die($html);
     }
 
diff --git a/module/port/model.php b/module/port/model.php
index 70028fdf7d..b3f718a828 100644
--- a/module/port/model.php
+++ b/module/port/model.php
@@ -1304,21 +1304,30 @@ class portModel extends model
     }
 
     /**
-     * buildNextList
+     * Build NextList.
      *
      * @param  array  $list
+     * @param  int    $lastID
      * @param  string $fields
      * @access public
      * @return void
      */
-    public function buildNextList($list = array(), $fields = '')
+    public function buildNextList($list = array(), $lastID = 0, $fields = '', $pagerID = 1)
     {
         $html = '';
+        $key  = key($list);
+        $showImportCount = $this->config->port->showImportCount;
+        $lastRow = $lastID + $key + $showImportCount;
+
         foreach($list as $row => $object)
         {
+            if($row <= $lastID) continue;
+            if($row > $lastRow) break;
+
+            $tmpList[$row] = $object;
             $trClass = '';
-            if(!isset($list[$row+1])) $trClass = 'showmore';
-            $html .= "<tr class='text-top $trClass'>";
+            if($row == $lastRow) $trClass = 'showmore';
+            $html .= "<tr class='text-top $trClass' data-id=$row>";
             $html .= '<td>';
             $html .= $object->id;
             $html .= html::hidden("id[$row]", $object->id);
@@ -1331,9 +1340,16 @@ class portModel extends model
                 $name     = "{$field}[$row]";
                 $selected = !empty($object->$field) ? $object->$field : '';
 
-                if($control == 'select')       $html .= '<td>' . html::select("$name", $values, $selected, "class='form-control picker-select' data-field='{$field}'") . '</td>';
+                $options = array();
+                if($control == 'select' or $control == 'multiple')
+                {
+                    if(!empty($values[$selected])) $options = array($selected => $values[$selected]);
+                    if(!empty($values[$selected]) and isset($values[0])) $options = array_slice($values, 0, 1);
+                }
 
-                elseif($control == 'multiple') $html .= '<td>' . html::select("{$name}[]", $values, $selected, "multiple class='form-control picker-select'") . '</td>';
+                if($control == 'select')       $html .= '<td>' . html::select("$name", $options, $selected, "class='form-control picker-select nopicker' data-field='{$field}'") . '</td>';
+
+                elseif($control == 'multiple') $html .= '<td>' . html::select($name . "[]", $options, $selected, "multiple class='form-control picker-select nopicker' data-field='{$field}'") . '</td>';
 
                 elseif($control == 'date')     $html .= '<td>' . html::input("$name", $selected, "class='form-control form-date autocomplete='off'") . '</td>';
 
@@ -1343,7 +1359,11 @@ class portModel extends model
 
                 elseif($control == 'textarea') $html .= '<td>' . html::textarea("$name", $selected, "class='form-control' cols='50' rows='1'") . '</td>';
 
-                elseif($field == 'stepDesc' or $field == 'stepExpect') $html .= '<td>' . $this->process4Testcase($field, $list, $row) . '</td>';
+                elseif($field == 'stepDesc' or $field == 'stepExpect')
+                {
+                    $stepDesc = $this->process4Testcase($field, $tmpList, $row);
+                    if($stepDesc) $html .= '<td>' . $stepDesc . '</td>';
+                }
 
                 else $html .= '<td>' . html::input("$name", $selected, "class='form-control autocomplete='off'") . '</td>';
             }
diff --git a/module/testcase/model.php b/module/testcase/model.php
index b837f7c34f..e0090f6c60 100644
--- a/module/testcase/model.php
+++ b/module/testcase/model.php
@@ -2497,4 +2497,97 @@ class testcaseModel extends model
 
         return $menu;
     }
+
+    /**
+     * processDatas
+     *
+     * @param  int    $datas
+     * @access public
+     * @return void
+     */
+    public function processDatas($datas)
+    {
+        if(isset($datas->datas)) $datas = $datas->datas;
+        $columnKey  = array();
+        $caseData   = array();
+        $stepData   = array();
+        $stepVars   = 0;
+
+        foreach($datas as $row => $cellValue)
+        {
+            foreach($cellValue as $field => $value)
+            {
+                if($field != 'stepDesc' and $field != 'stepExpect') continue;
+                if($field == 'stepDesc' or $field == 'stepExpect')
+                {
+                    $steps = $value;
+                    if(strpos($value, "\n"))
+                    {
+                        $steps = explode("\n", $value);
+                    }
+                    elseif(strpos($value, "\r"))
+                    {
+                        $steps = explode("\r", $value);
+                    }
+                    if(is_string($steps)) $steps = explode("\n", $steps);
+
+                    $stepKey  = str_replace('step', '', strtolower($field));
+
+                    $caseStep = array();
+                    foreach($steps as $step)
+                    {
+                        $trimedStep = trim($step);
+                        if(empty($trimedStep)) continue;
+                        if(preg_match('/^(([0-9]+)\.[0-9]+)([.、]{1})/U', $step, $out) and ($field == 'stepDesc' or ($field == 'stepExpect' and isset($stepData[$row]['desc'][$out[1]]))))
+                        {
+                            $num     = $out[1];
+                            $parent  = $out[2];
+                            $sign    = $out[3];
+                            $signbit = $sign == '.' ? 1 : 3;
+                            $step    = trim(substr($step, strlen($num) + $signbit));
+                            if(!empty($step)) $caseStep[$num]['content'] = $step;
+                            $caseStep[$num]['type']    = 'item';
+                            $caseStep[$parent]['type'] = 'group';
+                        }
+                        elseif(preg_match('/^([0-9]+)([.、]{1})/U', $step, $out) and ($field == 'stepDesc' or ($field == 'stepExpect' and isset($stepData[$row]['desc'][$out[1]]))))
+                        {
+                            $num     = $out[1];
+                            $sign    = $out[2];
+                            $signbit = $sign == '.' ? 1 : 3;
+                            $step    = trim(substr($step, strpos($step, $sign) + $signbit));
+                            if(!empty($step)) $caseStep[$num]['content'] = $step;
+                            $caseStep[$num]['type'] = 'step';
+                        }
+                        elseif(isset($num))
+                        {
+                            if(!isset($caseStep[$num]['content'])) $caseStep[$num]['content'] = '';
+                            if(!isset($caseStep[$num]['type']))    $caseStep[$num]['type']    = 'step';
+                            $caseStep[$num]['content'] .= "\n" . $step;
+                        }
+                        else
+                        {
+                            if($field == 'stepDesc')
+                            {
+                                $num = 1;
+                                $caseStep[$num]['content'] = $step;
+                                $caseStep[$num]['type']    = 'step';
+                            }
+                            if($field == 'stepExpect' and isset($stepData[$row]['desc']))
+                            {
+                                end($stepData[$row]['desc']);
+                                $num = key($stepData[$row]['desc']); $caseStep[$num]['content'] = $step;
+                            }
+                        }
+                    }
+
+                    unset($num);
+                    unset($sign);
+                    $stepVars += count($caseStep, COUNT_RECURSIVE) - count($caseStep);
+                    $stepData[$row][$stepKey] = $caseStep;
+                }
+
+            }
+        }
+        return $stepData;
+    }
 }
diff --git a/module/testcase/view/showimport.html.php b/module/testcase/view/showimport.html.php
index 4135813bc4..86902fcbfd 100644
--- a/module/testcase/view/showimport.html.php
+++ b/module/testcase/view/showimport.html.php
@@ -49,6 +49,7 @@ $(function()
 </script>
 <?php else:?>
 <?php js::set('requiredFields', $requiredFields);?>
+<?php js::set('allCount', $allCount);?>
 <div id="mainContent" class="main-content">
   <div class="main-header clearfix">
     <h2><?php echo $lang->task->import;?></h2>
@@ -99,7 +100,8 @@ $(function()
         $hasMultiple = false;
         ?>
       </tbody>
-      <tfoot>
+
+      <tfoot class='hidden'>
         <tr>
           <td colspan='10' class='text-center form-actions'>
             <?php
@@ -128,12 +130,18 @@ $(function()
 </div>
 <?php endif;?>
 <script>
-$.ajaxSetup({async: false});
+
+$.get(createLink('port', 'ajaxGetTbody','model=<?php echo $model;?>&lastID=0&pagerID=<?php echo $pagerID;?>'), function(data)
+{
+    $('#showData > tbody').append(data);
+    if($('#showData tbody').find('tr').hasClass('showmore') === false) $('#showData tfoot').removeClass('hidden');
+    $('#showData tbody').find('.picker-select').picker({chosenMode: true});
+})
 
 window.addEventListener('scroll', this.handleScroll);
 function handleScroll(e)
 {
-    var relative = 200; // 相对距离
+    var relative = 500; // 相对距离
     $('tr.showmore').each(function()
     {
         var $showmore = $(this);
@@ -142,7 +150,7 @@ function handleScroll(e)
 
         if(getScrollTop() + getWindowHeight() >= offsetTop - relative)
         {
-            throttle(loadData($showmore), 150)
+            throttle(loadData($showmore), 250)
         }
     })
 }
@@ -150,10 +158,13 @@ function handleScroll(e)
 function loadData($showmore)
 {
     $showmore.removeClass('showmore');
-
-    $.get(createLink('port', 'ajaxGetTbody','model=<?php echo $model;?>&pagerID=<?php echo $pagerID;?>'), function(data)
+    var lastID = $showmore.attr('data-id');
+    var url    = createLink('port', 'ajaxGetTbody','model=<?php echo $model;?>&lastID=' + lastID + '&pagerID=<?php echo $pagerID;?>');
+    $.get(url, function(data)
     {
         $showmore.after(data);
+        if($('#showData tbody').find('tr').hasClass('showmore') === false) $('#showData tfoot').removeClass('hidden');
+        $('#showData tbody').find('.picker-select.nopicker').picker({chosenMode: true}).removeClass('nopicker');
     })
 }
 
@@ -197,11 +208,6 @@ function getWindowHeight()
     return document.compatMode == "CSS1Compat" ? windowHeight = document.documentElement.clientHeight : windowHeight = document.body.clientHeight
 }
 
-$.get(createLink('port', 'ajaxGetTbody','model=<?php echo $model;?>&pagerID=<?php echo $pagerID;?>'), function(data)
-{
-    $('#showData > tbody').append(data);
-})
-
 $('#showData').on('mouseenter', '.picker', function(e){
     var myPicker = $(this);
     var field    = myPicker.prev().attr('data-field');
@@ -211,12 +217,15 @@ $('#showData').on('mouseenter', '.picker', function(e){
     var value    = myPicker.prev().val();
 
     if($('#' + id).attr('isInit')) return;
+
+    $.ajaxSettings.async = false;
     $.get(createLink('port', 'ajaxGetOptions', 'model=<?php echo $model;?>&field=' + field + '&value=' + value + '&index=' + index), function(data)
     {
         $('#' + id).parent().html(data);
         $('#' + id).picker({chosenMode: true});
         $('#' + id).attr('isInit', true);
     });
+    $.ajaxSettings.async = true;
 })
 
 $(function()