diff --git a/apps/emqx_connector/i18n/emqx_connector_schema_lib.conf b/apps/emqx_connector/i18n/emqx_connector_schema_lib.conf
index 8f25e0352..1bc45c36d 100644
--- a/apps/emqx_connector/i18n/emqx_connector_schema_lib.conf
+++ b/apps/emqx_connector/i18n/emqx_connector_schema_lib.conf
@@ -35,11 +35,11 @@ emqx_connector_schema_lib {
 
     pool_size {
         desc {
-          en: "Size of the connection pool."
-          zh: "连接池大小。"
+          en: "Size of the connection pool towards the bridge target service."
+          zh: "桥接远端服务时使用的连接池大小。"
         }
         label: {
-              en: "Pool Size"
+              en: "Connection Pool Size"
               zh: "连接池大小"
             }
     }