diff --git a/frontend/src/utils/util.ts b/frontend/src/utils/util.ts
index 6ad3d8bcc..53d0ef1eb 100644
--- a/frontend/src/utils/util.ts
+++ b/frontend/src/utils/util.ts
@@ -171,7 +171,7 @@ export function checkPort(value: string): boolean {
     if (Number(value) <= 0) {
         return true;
     }
-    const reg = /^([0-9]|[1-9]\d{1,3}|[1-5]\d{4}|6[0-5]{2}[0-3][0-5])$/;
+    const reg = /^([1-9](\d{0,3}))$|^([1-5]\d{4})$|^(6[0-4]\d{3})$|^(65[0-4]\d{2})$|^(655[0-2]\d)$|^(6553[0-5])$/;
     if (!reg.test(value) && value !== '') {
         return true;
     } else {