diff --git a/src/ApiDesc.php b/src/ApiDesc.php
index 2e9903f..24ce9e2 100644
--- a/src/ApiDesc.php
+++ b/src/ApiDesc.php
@@ -36,18 +36,21 @@ public function render() {
 
         $exploade_service = explode('/', $service);
         switch (count($exploade_service)) {
-            case 2:
+            case 2://不是模块
                 $classNameTpl = \Yii::$app->controllerNamespace . '\\%sController';
                 $className = sprintf($classNameTpl, ucfirst($exploade_service[0]));
                 $methodName = 'action' .ucfirst($exploade_service[1]);
                 break;
-            case 3:
-                $module = \Yii::$app->modules[$exploade_service['0']]['class'];
+            default://是模块
+                //不论几级模块,倒数第三个一定是模块名
+                $c = count($exploade_service);
+                $moduleName = $exploade_service[$c-3];
+                $module = \Yii::$app->modules[$moduleName]['class'];
                 $t = new \ReflectionClass($module);
                 $moduleNamespace = $t->getNamespaceName();
                 $classNameTpl = $moduleNamespace . '\\controllers\\%sController';
-                $className = sprintf($classNameTpl, ucfirst($exploade_service[1]));
-                $methodName = 'action' .ucfirst($exploade_service[2]);
+                $className = sprintf($classNameTpl, ucfirst($exploade_service[$c-2]));
+                $methodName = 'action' .ucfirst($exploade_service[$c-1]);
                 break;
         }
         // 整合需要的类注释，包括父类注释
diff --git a/src/ApiList.php b/src/ApiList.php
index 9753fb4..a717078 100644
--- a/src/ApiList.php
+++ b/src/ApiList.php
@@ -66,16 +66,14 @@ public function render($modules = []) {
         }
         foreach ($classesName as $className) {
             $explodeClassName = explode('\\', trim($className, '\\'));
-            switch (count($explodeClassName)) {
-                case 3:
-                    $apiServerShortName = $explodeClassName[2];
-                    $service_1 = strtolower(substr($apiServerShortName, 0, -10));
-                    break;
-                case 5:
-                    $apiServerShortName = $explodeClassName[2] . '.' . $explodeClassName[4];
-                    $service_1 = strtolower(substr($apiServerShortName, 0, -10));
-                    break;
+            $c = count($explodeClassName);
+            if ($c > 3) {
+                unset($explodeClassName[$c-2]);
             }
+            unset($explodeClassName[0]);
+            unset($explodeClassName[1]);
+            $apiServerShortName = implode('.', $explodeClassName);//ok
+            $service_1 = strtolower(substr($apiServerShortName, 0, -10));
             $apiServer = $className;
             if (!class_exists($className)) {
                 continue;