diff --git a/@ohos.uimode.d.ts b/@ohos.uimode.d.ts
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+/*
+ * 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 { AsyncCallback, Callback } from './basic';
+
+/**
+ * Provide APIs to set system uimode.
+ * @syscap SystemCapability.MiscServices.UiMode
+ * @import import uimode from '@ohos.uimode';
+ * @since 9
+ */
+declare namespace uimode {
+    /**
+     * Set the system uimode to dark-mode or light-mode.
+     * @param isDarkMode Indicates whether to set dark-mode.
+     */
+    function setDarkMode(isDarkMode: boolean, callback: AsyncCallback<void>): void;
+    function setDarkMode(isDarkMode: boolean): Promise<void>;
+}
+export default uimode;
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