diff --git a/src/spaceone/plugin/api/v1/plugin.py b/src/spaceone/plugin/api/v1/plugin.py
index 67f9d5d..e324726 100644
--- a/src/spaceone/plugin/api/v1/plugin.py
+++ b/src/spaceone/plugin/api/v1/plugin.py
@@ -1,8 +1,9 @@
-# -*- coding: utf-8 -*-
-
+import logging
 from spaceone.api.plugin.v1 import plugin_pb2, plugin_pb2_grpc
 from spaceone.core.pygrpc import BaseAPI
 
+_LOGGER = logging.getLogger(__name__)
+
 
 class Plugin(BaseAPI, plugin_pb2_grpc.PluginServicer):
 
@@ -37,6 +38,7 @@ def get_plugin_metadata(self, request, context):
 
         with self.locator.get_service('PluginService', metadata) as plugin_svc:
             metadata = plugin_svc.get_plugin_metadata(params)
+            _LOGGER.debug(f'[get_plugin_metadata] {metadata}')
             return self.locator.get_info('PluginMetadata', metadata)
 
     def notify_failure(self, request, context):
diff --git a/src/spaceone/plugin/info/plugin_info.py b/src/spaceone/plugin/info/plugin_info.py
index 828dadf..03595dd 100644
--- a/src/spaceone/plugin/info/plugin_info.py
+++ b/src/spaceone/plugin/info/plugin_info.py
@@ -1,3 +1,4 @@
+import logging
 import functools
 
 from spaceone.api.plugin.v1 import plugin_pb2
@@ -7,6 +8,8 @@
 
 __all__ = ['PluginInfo', 'PluginsInfo', 'PluginEndpoint', 'PluginMetadata']
 
+_LOGGER = logging.getLogger(__name__)
+
 
 def PluginInfo(plugin_vo: InstalledPluginRef, minimal=False):
     if isinstance(plugin_vo, InstalledPluginRef):
@@ -33,7 +36,6 @@ def PluginInfo(plugin_vo: InstalledPluginRef, minimal=False):
             'supervisor_id': plugin_vo.supervisor_id,
             'managed': True,
             'domain_id': plugin_vo.domain_id
-
         }
     return supervisor_pb2.PluginInfo(**info)
 
@@ -49,4 +51,8 @@ def PluginEndpoint(endpoint):
 
 
 def PluginMetadata(metadata):
-    return plugin_pb2.PluginMetadata(**metadata)
+    info = {
+        'metadata': change_struct_type(metadata)
+    }
+    _LOGGER.debug(f'[PluginMetadata] {info}')
+    return plugin_pb2.PluginMetadata(**info)
diff --git a/src/spaceone/plugin/service/plugin_service.py b/src/spaceone/plugin/service/plugin_service.py
index 8c0b6cd..e4cba56 100644
--- a/src/spaceone/plugin/service/plugin_service.py
+++ b/src/spaceone/plugin/service/plugin_service.py
@@ -58,6 +58,7 @@ def get_plugin_metadata(self, params: dict):
         plugin_endpoint_info = self._get_plugin_endpoint(params)
         api_class = self._get_plugin_api_class(plugin_id, domain_id)
         init_response = self.plugin_mgr.init_plugin(plugin_endpoint_info.get('endpoint'), api_class, {}, domain_id)
+        _LOGGER.debug(f'[get_plugin_metadata] init_response: {init_response}')
         return {'metadata': init_response.get('metadata', {})}
 
     def _get_plugin_endpoint(self, params):