diff --git a/server/querier/engine/clickhouse/clickhouse_test.go b/server/querier/engine/clickhouse/clickhouse_test.go
index c7010cf0d22..da0fd7b4750 100644
--- a/server/querier/engine/clickhouse/clickhouse_test.go
+++ b/server/querier/engine/clickhouse/clickhouse_test.go
@@ -544,8 +544,8 @@ var (
 	}, {
 		name:   "test_show_subnet_vpc_where",
 		db:     "flow_metrics",
-		input:  "SHOW tag subnet values from vtap_flow_port where vpc_id != 1 and vpc !='xx'",
-		output: []string{"SELECT id AS `value`, name AS `display_name` FROM flow_tag.`subnet_map` WHERE (not(l3_epc_id = 1) AND not(toUInt64(l3_epc_id) GLOBAL IN (SELECT id FROM flow_tag.l3_epc_map WHERE name = 'xx'))) GROUP BY `value`, `display_name` ORDER BY `value` asc LIMIT 10000"},
+		input:  "SHOW tag subnet values from vtap_flow_port where vpc_id != 1 and vpc !='xx' and subnet_id != 1 and subnet !='xx'",
+		output: []string{"SELECT id AS `value`, name AS `display_name` FROM flow_tag.`subnet_map` WHERE (not(l3_epc_id = 1) AND not(toUInt64(l3_epc_id) GLOBAL IN (SELECT id FROM flow_tag.l3_epc_map WHERE name = 'xx')) AND not(value = 1) AND not(display_name = 'xx')) GROUP BY `value`, `display_name` ORDER BY `value` asc LIMIT 10000"},
 	}, {
 		name:   "test_application_log_body",
 		db:     "application_log",
diff --git a/server/querier/engine/clickhouse/common/const.go b/server/querier/engine/clickhouse/common/const.go
index a293130a6f0..563042a2065 100644
--- a/server/querier/engine/clickhouse/common/const.go
+++ b/server/querier/engine/clickhouse/common/const.go
@@ -60,5 +60,5 @@ var SHOW_TAG_VALUE_MAP = map[string][]string{
 	"gprocess_map":    []string{"gprocess", "chost", "l3_epc"},
 	"pod_ingress_map": []string{"pod_cluster", "pod_ns", "pod_ingress"},
 	"pod_node_map":    []string{"pod_cluster", "pod_node"},
-	"subnet_map":      []string{"l3_epc"},
+	"subnet_map":      []string{"l3_epc", "subnet"},
 }