diff --git a/dbm-ui/backend/db_monitor/tpls/collect/dbm_mssql_exporter.json b/dbm-ui/backend/db_monitor/tpls/collect/dbm_mssql_exporter.json
index 0569994639..c1d1b2ba64 100644
--- a/dbm-ui/backend/db_monitor/tpls/collect/dbm_mssql_exporter.json
+++ b/dbm-ui/backend/db_monitor/tpls/collect/dbm_mssql_exporter.json
@@ -13,7 +13,7 @@
         "period": 60,
         "timeout": 60,
         "host": "127.0.0.1",
-        "port": "8100"
+        "port": ""
       },
       "plugin": {
         "--web.listen-address": "${host}:${port}",