diff --git a/deployments/monitor/grafana/milvus-dashboard.json b/deployments/monitor/grafana/milvus-dashboard.json
index 98d2f3d17e..82ec86b47c 100644
--- a/deployments/monitor/grafana/milvus-dashboard.json
+++ b/deployments/monitor/grafana/milvus-dashboard.json
@@ -2504,7 +2504,7 @@
           "refId": "A"
         },
         {
-          "expr": "sum(rate(milvus_rootcoord_drop_index_total{app_kubernetes_io_instance=~\"$instance\", app_kubernetes_io_name=\"$app_name\", namespace=\"$namespace\", type=\"success\"}[5m])) by (pod)",
+          "expr": "sum(increase(milvus_rootcoord_drop_index_total{app_kubernetes_io_instance=~\"$instance\", app_kubernetes_io_name=\"$app_name\", namespace=\"$namespace\", type=\"success\"}[2m])/2)",
           "interval": "",
           "legendFormat": "success",
           "refId": "B"