diff --git a/module/program/control.php b/module/program/control.php
index e905731605..00f4269037 100644
--- a/module/program/control.php
+++ b/module/program/control.php
@@ -595,6 +595,7 @@ class program extends control
     }
 
     /**
+     * 导出项目集。
      * Export program.
      *
      * @param  string $status
@@ -602,36 +603,35 @@ class program extends control
      * @access public
      * @return void
      */
-    public function export($status, $orderBy)
+    public function export(string $status, string $orderBy)
     {
         if($_POST)
         {
-            $programLang   = $this->lang->program;
-            $programConfig = $this->config->program;
-
             /* Create field lists. */
-            $fields = $this->post->exportFields ? $this->post->exportFields : explode(',', $programConfig->list->exportFields);
+            $fields = $this->post->exportFields ? $this->post->exportFields : explode(',', $this->config->program->list->exportFields);
             foreach($fields as $key => $fieldName)
             {
                 $fieldName = trim($fieldName);
-                $fields[$fieldName] = zget($programLang, $fieldName);
+                $fields[$fieldName] = zget($this->lang->program, $fieldName);
                 unset($fields[$key]);
             }
 
-            $programs = $this->program->getList($status, $orderBy, null);
+            /* Get and process program list. */
             $users    = $this->loadModel('user')->getPairs('noletter');
-            foreach($programs as $i => $program)
+            $programs = $this->program->getList($status, $orderBy, null);
+            $products = $this->program->getProductByProgram(array_keys($programs));
+            foreach($programs as $programID => $program)
             {
-                $program->PM       = zget($users, $program->PM);
-                $program->status   = $this->processStatus('project', $program);
-                $program->model    = zget($this->lang->project->modelList, $program->model);
-                $program->product  = implode(",", $this->dao->select('name')->from(TABLE_PRODUCT)->where('program')->eq($program->id)->fetchPairs('name'));
-                $program->budget   = $program->budget . zget($this->lang->project->unitList, $program->budgetUnit);
+                $program->PM      = zget($users, $program->PM);
+                $program->status  = $this->processStatus('project', $program);
+                $program->model   = zget($this->lang->project->modelList, $program->model);
+                $program->product = empty($products[$programID]) ? '' : implode(",", helper::arrayColumn($products[$programID], 'name'));
+                $program->budget  = $program->budget . zget($this->lang->project->unitList, $program->budgetUnit);
 
                 if($this->post->exportType == 'selected')
                 {
                     $checkedItem = $this->cookie->checkedItem;
-                    if(strpos(",$checkedItem,", ",{$program->id},") === false) unset($programs[$i]);
+                    if(strpos(",$checkedItem,", ",{$program->id},") === false) unset($programs[$programID]);
                 }
             }
 
diff --git a/module/program/model.php b/module/program/model.php
index cf03065421..e762714a45 100644
--- a/module/program/model.php
+++ b/module/program/model.php
@@ -314,7 +314,7 @@ class programModel extends model
      */
     public function getKanbanStatisticData(array $programs): array
     {
-        $productGroup  = $this->programTao->getProductByProgram(array_keys($programs));
+        $productGroup  = $this->getProductByProgram(array_keys($programs));
         $productIdList = array();
         foreach($productGroup as $programID => $products)
         {
@@ -1295,14 +1295,15 @@ class programModel extends model
     }
 
     /**
+     * 判断操作按钮是否可以点击。
      * Judge an action is clickable or not.
      *
-     * @param  object    $program
-     * @param  string    $action
+     * @param  object $program
+     * @param  string $action
      * @access public
      * @return bool
      */
-    public static function isClickable($program, $action)
+    public static function isClickable(object $program, string $action): bool
     {
         $action = strtolower($action);
 
@@ -1826,4 +1827,23 @@ class programModel extends model
         }
         return $result;
     }
+
+    /**
+     * 获取项目集下的产品列表信息。
+     * Get product list information under the program.
+     *
+     * @param  array  $programIdList
+     * @access public
+     * @return array
+     */
+    public function getProductByProgram(array $programIdList = array()): array
+    {
+        return $this->dao->select('*')->from(TABLE_PRODUCT)
+            ->where('deleted')->eq(0)
+            ->andWhere('status')->ne('closed')
+            ->beginIF(!empty($programIdList))->andWhere('program')->in($programIdList)->fi()
+            ->beginIF(!$this->app->user->admin)->andWhere('id')->in($this->app->user->view->products)->fi()
+            ->orderBy('order_asc')
+            ->fetchGroup('program');
+    }
 }
diff --git a/module/program/tao.php b/module/program/tao.php
index 6ede7f973d..5430af321e 100644
--- a/module/program/tao.php
+++ b/module/program/tao.php
@@ -30,25 +30,6 @@ class programTao extends programModel
             ->fetchAll('id');
     }
 
-    /**
-     * 获取项目集下的产品列表信息。
-     * Get product list information under the program.
-     *
-     * @param  array     $programIdList
-     * @access protected
-     * @return array
-     */
-    protected function getProductByProgram(array $programIdList = array()): array
-    {
-        return $this->dao->select('*')->from(TABLE_PRODUCT)
-            ->where('deleted')->eq(0)
-            ->andWhere('status')->ne('closed')
-            ->beginIF(!empty($programIdList))->andWhere('program')->in($programIdList)->fi()
-            ->beginIF(!$this->app->user->admin)->andWhere('id')->in($this->app->user->view->products)->fi()
-            ->orderBy('order_asc')
-            ->fetchGroup('program');
-    }
-
     /**
      *获取所有根项目集基本数据。
      * Get base data of all root programs.
diff --git a/module/program/test/tao/getproductbyprogram.php b/module/program/test/model/getproductbyprogram.php
similarity index 100%
rename from module/program/test/tao/getproductbyprogram.php
rename to module/program/test/model/getproductbyprogram.php