diff --git a/veadk/tools/skills_tools/register_skills_tool.py b/veadk/tools/skills_tools/register_skills_tool.py
index 22ba926e..b305f2ce 100644
--- a/veadk/tools/skills_tools/register_skills_tool.py
+++ b/veadk/tools/skills_tools/register_skills_tool.py
@@ -121,6 +121,7 @@ def register_skills_tool(
             sk=secret_key,
             session_token=session_token,
             bucket_name=tos_bucket,
+            region=region,
         )
 
         object_key = (
diff --git a/veadk/tools/skills_tools/skills_tool.py b/veadk/tools/skills_tools/skills_tool.py
index ea2e8da7..74f41475 100644
--- a/veadk/tools/skills_tools/skills_tool.py
+++ b/veadk/tools/skills_tools/skills_tool.py
@@ -111,6 +111,8 @@ def _invoke_skill(self, skill_name: str, tool_context: ToolContext) -> str:
                 from veadk.auth.veauth.utils import get_credential_from_vefaas_iam
                 from veadk.integrations.ve_tos.ve_tos import VeTOS
 
+                region = os.getenv("AGENTKIT_TOOL_REGION", "cn-beijing")
+
                 access_key = os.getenv("VOLCENGINE_ACCESS_KEY")
                 secret_key = os.getenv("VOLCENGINE_SECRET_KEY")
                 session_token = ""
@@ -130,6 +132,7 @@ def _invoke_skill(self, skill_name: str, tool_context: ToolContext) -> str:
                     sk=secret_key,
                     session_token=session_token,
                     bucket_name=tos_bucket,
+                    region=region,
                 )
 
                 save_path = skill_dir / f"{skill_name}.zip"