diff --git a/backend/package.json b/backend/package.json
index 259d979..e394784 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sub-store",
-  "version": "2.14.132",
+  "version": "2.14.133",
   "description": "Advanced Subscription Manager for QX, Loon, Surge, Stash and ShadowRocket.",
   "main": "src/main.js",
   "scripts": {
diff --git a/backend/src/core/proxy-utils/index.js b/backend/src/core/proxy-utils/index.js
index 374a2c0..7130280 100644
--- a/backend/src/core/proxy-utils/index.js
+++ b/backend/src/core/proxy-utils/index.js
@@ -1,5 +1,5 @@
 import download from '@/utils/download';
-import { isIPv4, isIPv6 } from '@/utils';
+import { isIPv4, isIPv6, isValidPortNumber } from '@/utils';
 import PROXY_PROCESSORS, { ApplyProcessor } from './processors';
 import PROXY_PREPROCESSORS from './preprocessors';
 import PROXY_PRODUCERS from './producers';
@@ -214,6 +214,9 @@ function safeMatch(parser, line) {
 }
 
 function lastParse(proxy) {
+    if (isValidPortNumber(proxy.port)) {
+        proxy.port = parseInt(proxy.port, 10);
+    }
     if (proxy.server) {
         proxy.server = proxy.server
             .trim()
diff --git a/backend/src/utils/index.js b/backend/src/utils/index.js
index c897216..0502b92 100644
--- a/backend/src/utils/index.js
+++ b/backend/src/utils/index.js
@@ -13,6 +13,12 @@ function isIPv6(ip) {
     return IPV6_REGEX.test(ip);
 }
 
+function isValidPortNumber(port) {
+    return /^((6553[0-5])|(655[0-2][0-9])|(65[0-4][0-9]{2})|(6[0-4][0-9]{3})|([1-5][0-9]{4})|([0-5]{0,5})|([0-9]{1,4}))$/.test(
+        port,
+    );
+}
+
 function isNotBlank(str) {
     return typeof str === 'string' && str.trim().length > 0;
 }
@@ -29,4 +35,12 @@ function getIfPresent(obj, defaultValue) {
     return isPresent(obj) ? obj : defaultValue;
 }
 
-export { isIPv4, isIPv6, isNotBlank, getIfNotBlank, isPresent, getIfPresent };
+export {
+    isIPv4,
+    isIPv6,
+    isValidPortNumber,
+    isNotBlank,
+    getIfNotBlank,
+    isPresent,
+    getIfPresent,
+};