diff --git a/aliyun/log/logclient.py b/aliyun/log/logclient.py
index cc426ccf..5cd73679 100644
--- a/aliyun/log/logclient.py
+++ b/aliyun/log/logclient.py
@@ -5516,13 +5516,11 @@ def update_export(self, project_name, job_name, export):
         :type job_name: string
         :param job_name: the job name of export job
 
-        :type export: string
+        :type export: Export
         :param export: the export job configuration
         """
-        if not isinstance(export, str):
-            raise TypeError("export type must be string")
         params = {"action": "RESTART"}
-        body = six.b(export)
+        body = six.b(json.dumps(export))
         headers = {'Content-Type': 'application/json', 'x-log-bodyrawsize': str(len(body))}
         resource = "/jobs/" + job_name
         (resp, header) = self._send("PUT", project_name, body, resource, params, headers)
@@ -6384,3 +6382,4 @@ def delete_store_view(self, project_name, store_view_name):
         resource = "/storeviews/" + store_view_name
         (resp, header) = self._send("DELETE", project_name, None, resource, params, {})
         return DeleteStoreViewResponse(header, resp)
+
diff --git a/tests/export_examples/export_odps_sink_demo.py b/tests/export_examples/export_odps_sink_demo.py
index f9ff7673..fb16e7a0 100644
--- a/tests/export_examples/export_odps_sink_demo.py
+++ b/tests/export_examples/export_odps_sink_demo.py
@@ -43,10 +43,9 @@ def update_export():
     client = LogClient("region", "ak", "ak_key")
     project = '11111'
     jobName = '11111'
-    config = getJobConfig(client, project, jobName)  # 获取任务的配置
-    config['displayName'] = config['displayName'] + 'new'
-    config['configuration']['sink']['delaySeconds'] = 909
-    export = json.dumps(config)
+    export = getJobConfig(client, project, jobName)  # 获取任务的配置
+    export['displayName'] = export['displayName'] + 'new'
+
     client.update_export(project_name=project, job_name=jobName, export=export)