diff --git a/config/config.php b/config/config.php
index 8041cee3..cb1d9b3b 100644
--- a/config/config.php
+++ b/config/config.php
@@ -21,7 +21,7 @@ return [
     'source' => [
         'extensions' => ['php', 'yaml', 'yml', 'json', 'toml'], // 配置文件扩展名
         'paths' => [
-            SOURCE_ROOT_DIR . '/config', // 配置文件所在目录
+            \ZM\Framework::getInstance()->runtime_preferences->getConfigDir(), // 配置文件所在目录
             // 可以添加多个配置文件目录
         ],
     ],
diff --git a/src/ZM/Config/RuntimePreferences.php b/src/ZM/Config/RuntimePreferences.php
index 458f2377..a1ea4455 100644
--- a/src/ZM/Config/RuntimePreferences.php
+++ b/src/ZM/Config/RuntimePreferences.php
@@ -56,7 +56,8 @@ class RuntimePreferences
 
     public function getConfigDir(): string
     {
-        return $this->config_dir;
+        // fallback to internal config dir if config_dir not exists
+        return is_dir($this->config_dir) ? $this->config_dir : FRAMEWORK_ROOT_DIR . '/config';
     }
 
     public function withConfigDir(string $config_dir): self