diff --git a/demo_test/functional_test/tests/clear_all_subscribed_events.tc b/demo_test/functional_test/tests/clear_all_subscribed_events.tc
new file mode 100755
index 0000000..f5eef7a
--- /dev/null
+++ b/demo_test/functional_test/tests/clear_all_subscribed_events.tc
@@ -0,0 +1,21 @@
+#!/bin/bash  
+
+# Copyrigh/ 2019-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+./dm attach 192.168.4.27:8888:120
+./dm showdeviceeventlist 192.168.4.27:8888
+./dm cleardeviceeventlist 192.168.4.27:8888
+./dm showdeviceeventlist 192.168.4.27:8888
+./dm delete 192.168.4.27:8888