diff --git a/services/accesstokenmanager/test/BUILD.gn b/services/accesstokenmanager/test/BUILD.gn
index 14a41d363b5a2bd5864f1c8a78d260684ba8a180..b6080d65759f06bbba886384df9acc4a0dd6b394 100644
--- a/services/accesstokenmanager/test/BUILD.gn
+++ b/services/accesstokenmanager/test/BUILD.gn
@@ -39,6 +39,7 @@ ohos_unittest("libaccesstoken_manager_service_standard_test") {
   sources = [
     "unittest/cpp/src/accesstoken_info_manager_test.cpp",
     "unittest/cpp/src/native_token_receptor_test.cpp",
+    "unittest/cpp/src/permission_grant_event_test.cpp",
   ]
 
   cflags_cc = [ "-DHILOG_ENABLE" ]
diff --git a/services/accesstokenmanager/test/unittest/cpp/src/permission_grant_event_test.cpp b/services/accesstokenmanager/test/unittest/cpp/src/permission_grant_event_test.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..bd8fa4482511b4fca40fb114b8208dbf300b7368
--- /dev/null
+++ b/services/accesstokenmanager/test/unittest/cpp/src/permission_grant_event_test.cpp
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2022 Huawei Device Co., Ltd.
+ * 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.
+ */
+
+#include "permission_grant_event_test.h"
+
+#define private public
+#include "permission_grant_event.h"
+#undef private
+
+using namespace testing::ext;
+using namespace OHOS::Security::AccessToken;
+
+namespace {
+static constexpr OHOS::HiviewDFX::HiLogLabel LABEL = {LOG_CORE, SECURITY_DOMAIN_ACCESSTOKEN, "PermissionGrantEventTest"};
+}
+
+void PermissionGrantEventTest::SetUpTestCase()
+{}
+
+void PermissionGrantEventTest::TearDownTestCase()
+{}
+
+void PermissionGrantEventTest::SetUp()
+{}
+
+void PermissionGrantEventTest::TearDown()
+{}
+
+/**
+ * @tc.name: NotifyPermGrantStoreResult001
+ * @tc.desc: test notify permssion grant event success
+ * @tc.type: FUNC
+ * @tc.require:issueI5OOPG
+ */
+HWTEST_F(PermissionGrantEventTest, NotifyPermGrantStoreResult001, TestSize.Level1)
+{
+    ACCESSTOKEN_LOG_INFO(LABEL, "NotifyPermGrantStoreResult001!");
+    AccessTokenID tokenID = 0x100000;
+    std::string permissionName = "testpremission";
+    uint64_t time;
+
+    PermissionGrantEvent eventHandler;
+    eventHandler.AddEvent(tokenID, permissionName, time);
+
+    // larger than grant timestamp
+    eventHandler.NotifyPermGrantStoreResult(true, time + 1);
+
+    ASSERT_EQ(eventHandler.permGrantEventList_.size(), 0);
+}
+
+/**
+ * @tc.name: NotifyPermGrantStoreResult002
+ * @tc.desc: test notify permssion grant event failed
+ * @tc.type: FUNC
+ * @tc.require:issueI5OOPG
+ */
+HWTEST_F(PermissionGrantEventTest, NotifyPermGrantStoreResult002, TestSize.Level1)
+{
+    ACCESSTOKEN_LOG_INFO(LABEL, "NotifyPermGrantStoreResult002!");
+    AccessTokenID tokenID = 0x100000;
+    std::string permissionName = "testpremission";
+    uint64_t time;
+
+    PermissionGrantEvent eventHandler;
+    eventHandler.AddEvent(tokenID, permissionName, time);
+
+    // larger than grant timestamp
+    eventHandler.NotifyPermGrantStoreResult(false, time + 1);
+
+    ASSERT_EQ(eventHandler.permGrantEventList_.size(), 0);
+}
+
+/**
+ * @tc.name: NotifyPermGrantStoreResult003
+ * @tc.desc: test notify permssion grant event success, but timestamp is less than add timestamp
+ * @tc.type: FUNC
+ * @tc.require:issueI5OOPG
+ */
+HWTEST_F(PermissionGrantEventTest, NotifyPermGrantStoreResult003, TestSize.Level1)
+{
+    ACCESSTOKEN_LOG_INFO(LABEL, "NotifyPermGrantStoreResult003!");
+    AccessTokenID tokenID = 0x100000;
+    std::string permissionName = "testpremission";
+    uint64_t time;
+
+    PermissionGrantEvent eventHandler;
+    eventHandler.AddEvent(tokenID, permissionName, time);
+
+    // less than grant timestamp
+    eventHandler.NotifyPermGrantStoreResult(true, time - 1);
+
+    ASSERT_EQ(eventHandler.permGrantEventList_.size(), 1);
+}
diff --git a/services/accesstokenmanager/test/unittest/cpp/src/permission_grant_event_test.h b/services/accesstokenmanager/test/unittest/cpp/src/permission_grant_event_test.h
new file mode 100644
index 0000000000000000000000000000000000000000..8b5b199e8dae1d577cb8bc15abca4e74ee5f8487
--- /dev/null
+++ b/services/accesstokenmanager/test/unittest/cpp/src/permission_grant_event_test.h
@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2022 Huawei Device Co., Ltd.
+ * 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.
+ */
+
+#ifndef PERMISSION_GRANT_EVENT_TEST_H
+#define PERMISSION_GRANT_EVENT_TEST_H
+
+#include <gtest/gtest.h>
+#include "accesstoken_log.h"
+
+namespace OHOS {
+namespace Security {
+namespace AccessToken {
+class PermissionGrantEventTest : public testing::Test {
+public:
+    static void SetUpTestCase();
+
+    static void TearDownTestCase();
+
+    void SetUp();
+
+    void TearDown();
+};
+} // namespace AccessToken
+} // namespace Security
+} // namespace OHOS
+#endif // PERMISSION_GRANT_EVENT_TEST_H
\ No newline at end of file