diff --git a/app/Utils/Helper.php b/app/Utils/Helper.php
index 028d0b0..3b3921f 100644
--- a/app/Utils/Helper.php
+++ b/app/Utils/Helper.php
@@ -111,7 +111,8 @@ class Helper
     public static function getSubscribeUrl($path)
     {
         $subscribeUrls = explode(',', admin_setting('subscribe_url'));
-        $subscribeUrl = $subscribeUrls[rand(0, count($subscribeUrls) - 1)];
+        $subscribeUrl = $subscribeUrls[array_rand($subscribeUrls)];
+        $subscribeUrl = self::replaceRandomNumber($subscribeUrl);
         if ($subscribeUrl) return $subscribeUrl . $path;
         return url($path);
     }
@@ -126,4 +127,27 @@ class Helper
         $encoded = base64_encode($data);
         return str_replace(['+', '/', '='], ['-', '_', ''], $encoded);
     }
+
+    /**
+     * 替换字符串中的 [num1-num2] 格式为介于 num1 和 num2 之间的随机数字
+     *
+     * @param string $input 用户输入的字符串
+     * @return string 替换后的字符串
+     */
+    public static function replaceRandomNumber($input) {
+        // 匹配 [1-4999] 格式的正则表达式
+        $pattern = '/\[(\d+)-(\d+)\]/';
+    
+        // 使用 preg_replace_callback 替换匹配到的内容
+        $result = preg_replace_callback($pattern, function ($matches) {
+            // 提取最小和最大值
+            $min = intval($matches[1]);
+            $max = intval($matches[2]);
+            // 生成随机数
+            $randomNumber = rand($min, $max);
+            return $randomNumber;
+        }, $input);
+    
+        return $result;
+    }
 }