diff --git a/src/views/kpi/assessment/performance/components/table.vue b/src/views/kpi/assessment/performance/components/table.vue
index 88352cd..6e1ea5a 100644
--- a/src/views/kpi/assessment/performance/components/table.vue
+++ b/src/views/kpi/assessment/performance/components/table.vue
@@ -794,6 +794,7 @@ export default {
   border-top: 1px solid @borderColor;
   bottom: 0;
   left: 0;
+  z-index: 1000;
   &-content {
     width: 100;
     margin: 0 auto;