diff --git a/ucloud/services/ucompshare/client.py b/ucloud/services/ucompshare/client.py
index 671d100..52bc980 100644
--- a/ucloud/services/ucompshare/client.py
+++ b/ucloud/services/ucompshare/client.py
@@ -3022,6 +3022,7 @@ def start_comp_share_instance(
         - **Region** (str) - (Config) 地域。 参见  `地域和可用区列表 <https://docs.ucloud.cn/api/summary/regionlist>`_
         - **UHostId** (str) - (Required) 实例Id
         - **Zone** (str) - (Required) 可用区。参见  `可用区列表 <https://docs.ucloud.cn/api/summary/regionlist>`_
+        - **WithoutGpu** (bool) - 无GPU启动。默认值: False
 
         **Response**
 
diff --git a/ucloud/services/ucompshare/schemas/apis.py b/ucloud/services/ucompshare/schemas/apis.py
index 8703af5..1740a32 100644
--- a/ucloud/services/ucompshare/schemas/apis.py
+++ b/ucloud/services/ucompshare/schemas/apis.py
@@ -2291,6 +2291,7 @@ class StartCompShareInstanceRequestSchema(schema.RequestSchema):
         "Region": fields.Str(required=True, dump_to="Region"),
         "UHostId": fields.Str(required=True, dump_to="UHostId"),
         "Zone": fields.Str(required=True, dump_to="Zone"),
+        "WithoutGpu": fields.Bool(required=False, dump_to="WithoutGpu"),
     }