diff --git a/runtime/main/extend/systemplugin/napi/index.js b/runtime/main/extend/systemplugin/napi/index.js
index fc1aaa75..acecccb7 100644
--- a/runtime/main/extend/systemplugin/napi/index.js
+++ b/runtime/main/extend/systemplugin/napi/index.js
@@ -43,6 +43,7 @@ import { mockProcess } from './ohos_process'
 import { mockUrl } from './ohos_url'
 import { mockHiAppEvent } from './ohos_hiAppEvent'
 import { mockHilog } from './ohos_hilog'
+import { mockHiSysEvent } from './ohos_hiSysEvent'
 import { mockTv } from './tv'
 import { mockDtv } from './dtv'
 import { mockDistributedAccount } from './ohos_account_distributedAccount'
@@ -293,6 +294,8 @@ export function mockRequireNapiFun() {
         return mockHiAppEvent();
       case "hilog":
         return mockHilog();
+      case "hiSysEvent":
+        return mockHiSysEvent();
       case "tv":
         return mockTv();
       case "dtv":
diff --git a/runtime/main/extend/systemplugin/napi/ohos_hiSysEvent.js b/runtime/main/extend/systemplugin/napi/ohos_hiSysEvent.js
new file mode 100644
index 00000000..58003cfb
--- /dev/null
+++ b/runtime/main/extend/systemplugin/napi/ohos_hiSysEvent.js
@@ -0,0 +1,107 @@
+/*
+ * 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.
+ */
+
+import { paramMock } from "../utils"
+
+function buildMockInfo(interfaceName) {
+  return interfaceName + " interface mocked in the Previewer. How this interface works on the Previewer" +
+    " may be different from that on a real device."
+}
+
+export function mockHiSysEvent() {
+  const EventType = {
+    FAULT: 1,
+    STATISTIC: 2,
+    SECURITY: 3,
+    BEHAVIOR: 4
+  }
+  const SysEventInfo = {
+    domain: paramMock.paramStringMock,
+    name: paramMock.paramStringMock,
+    eventType: EventType,
+    params: paramMock.paramObjectMock
+  }
+  const RuleType = {
+    WHOLE_WORD: 1,
+    PREFIX: 2,
+    REGULAR: 3
+  }
+  const WatchRule = {
+    domain: paramMock.paramStringMock,
+    name: paramMock.paramStringMock,
+    tag: paramMock.paramStringMock,
+    ruleType: RuleType
+  }
+  const Watcher = {
+    rules: [WatchRule],
+    onEvent: function(...args) {
+      console.warn(buildMockInfo("hisysEvent.Watcher.onEvent"))
+    },
+    onServiceDied: function(...args) {
+      console.warn(buildMockInfo("hisysEvent.Watcher.onServiceDied"))
+    }
+  }
+  const QueryArg = {
+    beginTime: paramMock.paramNumberMock,
+    endTime: paramMock.paramNumberMock,
+    maxEvents: paramMock.paramNumberMock
+  }
+  const QueryRule = {
+    domain: paramMock.paramStringMock,
+    names: [paramMock.paramStringMock]
+  }
+  const Querier = {
+    onQuery: function(...args) {
+      console.warn(buildMockInfo("hisysEvent.Querier.onQuery"))
+    },
+    onComplete: function(...args) {
+      console.warn(buildMockInfo("hisysEvent.Querier.onComplete"))
+    }
+  }
+  const hiSysEvent = {
+    EventType,
+    SysEventInfo,
+    RuleType,
+    WatchRule,
+    Watcher,
+    QueryArg,
+    QueryRule,
+    Querier,
+    write: function (...args) {
+      console.warn(buildMockInfo("hiSysEvent.write"))
+      const len = args.length
+      if (typeof args[len - 1] === 'function') {
+        args[len - 1].call(this, paramMock.businessErrorMock)
+      } else {
+        return new Promise((resolve) => {
+          resolve()
+        })
+      }
+    },
+    addWatcher: function(...args) {
+        console.warn(buildMockInfo("hiSysEvent.addWatcher"))
+        return paramMock.paramNumberMock;
+    },
+    removeWatcher: function(...args) {
+        console.warn(buildMockInfo("hiSysEvent.removeWatcher"))
+        return paramMock.paramNumberMock;
+    },
+    query: function(...args) {
+        console.warn(buildMockInfo("hiSysEvent.query"))
+        return paramMock.paramNumberMock;
+    }
+  }
+  return hiSysEvent
+}
\ No newline at end of file