diff --git a/mes_in_sct/start.php b/mes_in_sct/start.php
index 9dc813c..517c524 100644
--- a/mes_in_sct/start.php
+++ b/mes_in_sct/start.php
@@ -2,7 +2,7 @@
 <?php
 require_once __DIR__ . '/vendor/autoload.php';
 // 使用 getopt 函数解析命令行参数
-$options = getopt('h::', ['APP_ENV::', 'help::']);
+$options = getopt('h', ['APP_ENV:', 'help::']);
 // 检查是否请求帮助信息
 if (isset($options['h']) || isset($options['help'])) {
     echo "Usage: php start.php [options]\n";
@@ -11,6 +11,12 @@ if (isset($options['h']) || isset($options['help'])) {
     exit;
 }
 if (isset($options['APP_ENV'])) {
-    putenv('APP_ENV='.$options['APP_ENV']);
+    $validEnvs = ['dev', 'test', 'prod'];
+    if (in_array($options['APP_ENV'], $validEnvs)) {
+        putenv('APP_ENV='.$options['APP_ENV']);
+    } else {
+        echo "Invalid APP_ENV value. Allowed values: " . implode(', ', $validEnvs) . "\n";
+        exit(1);
+    }
 }
 \libs\core\App::run();