diff --git a/services/distributedhardwarefwkservice/test/unittest/common/accessmanager/access_manager_test.cpp b/services/distributedhardwarefwkservice/test/unittest/common/accessmanager/access_manager_test.cpp
index 822959a6b9354e3b4f2f4fa65b03a0e4887a2e0f..1dfa66cf3902013ee54208763ae2fb5a74e02df0 100644
--- a/services/distributedhardwarefwkservice/test/unittest/common/accessmanager/access_manager_test.cpp
+++ b/services/distributedhardwarefwkservice/test/unittest/common/accessmanager/access_manager_test.cpp
@@ -56,7 +56,13 @@ public:
 
 void AccessManagerTest::SetUp() {}
 
-void AccessManagerTest::TearDown() {}
+void AccessManagerTest::TearDown()
+{
+    // clear all the online devices
+    for (const auto &dev : TEST_DEVICES) {
+        DistributedHardwareManagerFactory::GetInstance().SendOffLineEvent(dev.first, dev.second, TEST_DEV_TYPE_PAD);
+    }
+}
 
 void AccessManagerTest::SetUpTestCase() {}