diff --git a/src/views/sylive/activity/statistics/index.vue b/src/views/sylive/activity/statistics/index.vue
index ce2a01a..6c7b585 100644
--- a/src/views/sylive/activity/statistics/index.vue
+++ b/src/views/sylive/activity/statistics/index.vue
@@ -447,9 +447,9 @@
     data() {
       return {
         id: '',
-        itemIdRanking: null,
-        itemIdPreheating: null,
-        itemIdLive: null,
+        itemIdRanking: '',
+        itemIdPreheating: '',
+        itemIdLive: '',
         statistics: {
           activityId: null,
           timeStart: null,
@@ -481,7 +481,7 @@
         }
       },
       funnelQuery(show) {
-        let itemId = 0;
+        let itemId = '';
         if (show == 'left') {
           itemId = this.itemIdPreheating;
         } else if (show == 'right') {