diff --git a/public/assets/js/backend/statistics/item.js b/public/assets/js/backend/statistics/item.js
index ac5db4b..e3a1ebe 100644
--- a/public/assets/js/backend/statistics/item.js
+++ b/public/assets/js/backend/statistics/item.js
@@ -93,7 +93,7 @@ define(['jquery', 'bootstrap', 'backend', 'table', 'form', 'echarts','echarts-th
                 if (source1!== ''){
                     data += 'source=' + source1+'&';
                 }
-                if (item_id !== ''){
+                if (item_id !== '' && item_id !== 'undefined'){
                     data +='item_id=' + item_id;
                 }