diff --git a/components/diy_goodsGroup/diy_goodsGroup.js b/components/diy_goodsGroup/diy_goodsGroup.js
index eabd4ee..15aa09c 100644
--- a/components/diy_goodsGroup/diy_goodsGroup.js
+++ b/components/diy_goodsGroup/diy_goodsGroup.js
@@ -148,8 +148,10 @@ Component({
 			this.data.g_id = nav_item.data;
 			var arr = [];
 
-			for (var i = 0; i < this.data.g_id.length; i += parseInt(this.data.goodscount)) {
-				arr.push(this.data.g_id.slice(i, i + parseInt(this.data.goodscount)));
+			if(this.data.g_id) {
+				for (var i = 0; i < this.data.g_id.length; i += parseInt(this.data.goodscount)) {
+					arr.push(this.data.g_id.slice(i, i + parseInt(this.data.goodscount)));
+				}
 			}
 			this.data.firist_type_data = arr;
 			this.init(this.data.classstyle_id, this.data.wgroup);