diff --git a/gcloud/taskflow3/domains/callback.py b/gcloud/taskflow3/domains/callback.py
index 043b829669..f0be82d739 100644
--- a/gcloud/taskflow3/domains/callback.py
+++ b/gcloud/taskflow3/domains/callback.py
@@ -22,7 +22,7 @@
 from requests import HTTPError
 
 from gcloud.taskflow3.domains.dispatchers import NodeCommandDispatcher
-from gcloud.taskflow3.models import TaskCallBackRecord, TaskFlowRelation
+from gcloud.taskflow3.models import TaskCallBackRecord, TaskFlowInstance, TaskFlowRelation
 from gcloud.utils.redis_lock import redis_lock
 
 logger = logging.getLogger("root")
@@ -98,7 +98,10 @@ def _url_callback(self):
             url = self.record.url
             response = None
             try:
-                response = requests.post(url, data=self.extra_info)
+                task = TaskFlowInstance.objects.get(id=self.task_id)
+                data = task.get_task_detail()
+                self.extra_info["outputs"] = data["outputs"]
+                response = requests.post(url, json=self.extra_info)
                 response.raise_for_status()
             except HTTPError as e:
                 message = (