diff --git a/apps/assets/tasks.py b/apps/assets/tasks.py
index dce2634c0..9dd58b78e 100644
--- a/apps/assets/tasks.py
+++ b/apps/assets/tasks.py
@@ -4,8 +4,6 @@ import re
 import os
 
 from celery import shared_task
-from ops.celery import app as celery_app
-from django.core.cache import cache
 from django.utils.translation import ugettext as _
 
 from common.utils import capacity_convert, \
diff --git a/apps/ops/tasks.py b/apps/ops/tasks.py
index bcdb09cee..ac0bdce89 100644
--- a/apps/ops/tasks.py
+++ b/apps/ops/tasks.py
@@ -2,6 +2,7 @@
 from celery import shared_task, subtask
 
 from common.utils import get_logger, get_object_or_none
+from .celery.utils import register_as_period_task, after_app_shutdown_clean
 from .models import Task, CommandExecution
 
 logger = get_logger(__file__)
@@ -34,6 +35,19 @@ def run_command_execution(cid, **kwargs):
     return execution.run()
 
 
+@shared_task
+@register_as_period_task(interval=3600*24)
+@after_app_shutdown_clean
+def clean_tasks_adhoc_period():
+    logger.debug("Start clean task adhoc and run history")
+    tasks = Task.objects.all()
+    for task in tasks:
+        adhoc = task.adhoc.all().order_by('-date_created')[5:]
+        for ad in adhoc:
+            ad.history.all().delete()
+            ad.delete()
+
+
 @shared_task
 def hello(name, callback=None):
     print("Hello {}".format(name))