diff --git a/api/@ohos.zlib.d.ts b/api/@ohos.zlib.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..abb974b2b034af961083197cdc467fab404de228
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+++ b/api/@ohos.zlib.d.ts
@@ -0,0 +1,114 @@
+/*
+ * Copyright (c) 2021 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 } from './basic';
+
+declare namespace zlib {
+/**
+ * @name ErrorCode
+ * @since 7
+ * @SysCap SystemCapability.Appexecfwk
+ * @import NA
+ * @permission NA
+ * @devices phone, tablet, tv, wearable, car
+ */
+  export enum ErrorCode {
+    ERROR_CODE_OK = 0,
+    ERROR_CODE_ERRNO = -1
+  }
+
+/**
+ * @name CompressLevel
+ * @since 7
+ * @SysCap SystemCapability.Appexecfwk
+ * @import NA
+ * @permission NA
+ * @devices phone, tablet, tv, wearable, car
+ */
+  export enum CompressLevel {
+    COMPRESS_LEVEL_NO_COMPRESSION = 0,
+    COMPRESS_LEVEL_BEST_SPEED = 1,
+    COMPRESS_LEVEL_BEST_COMPRESSION = 9,
+    COMPRESS_LEVEL_DEFAULT_COMPRESSION = -1
+  }
+
+/**
+ * @name CompressStrategy
+ * @since 7
+ * @SysCap SystemCapability.Appexecfwk
+ * @import NA
+ * @permission NA
+ * @devices phone, tablet, tv, wearable, car
+ */
+  export enum CompressStrategy {
+    COMPRESS_STRATEGY_DEFAULT_STRATEGY = 0,
+    COMPRESS_STRATEGY_FILTERED = 1,
+    COMPRESS_STRATEGY_HUFFMAN_ONLY = 2,
+    COMPRESS_STRATEGY_RLE = 3,
+    COMPRESS_STRATEGY_FIXED = 4
+  }
+
+/**
+ * @name MemLevel
+ * @since 7
+ * @SysCap SystemCapability.Appexecfwk
+ * @import NA
+ * @permission NA
+ * @devices phone, tablet, tv, wearable, car
+ */
+  export enum MemLevel {
+    MEM_LEVEL_MIN = 1,
+    MEM_LEVEL_MAX = 9,
+    MEM_LEVEL_DEFAULT = 8
+  }
+
+/**
+ * @name Options
+ * @since 7
+ * @SysCap SystemCapability.Appexecfwk
+ * @import NA
+ * @permission NA
+ * @devices phone, tablet, tv, wearable, car
+ */
+  interface Options {
+    level?: CompressLevel;
+    memLevel?: MemLevel;
+    strategy?: CompressStrategy;
+  }
+
+  /**
+   * Compress the specified file.
+   *
+   * @devices phone, tablet, tv, wearable, car
+   * @since 7
+   * @SysCap SystemCapability.Appexecfwk
+   * @param inFile Indicates the path of the file to be compressed.
+   * @param outFile Indicates the path of the output compressed file.
+   * @return Returns error code.
+   */
+  function zipFile(inFile:string, outFile:string, options: Options): Promise<void>;
+
+  /**
+   * Decompress the specified file.
+   *
+   * @devices phone, tablet, tv, wearable, car
+   * @since 7
+   * @SysCap SystemCapability.Appexecfwk
+   * @param inFile Indicates the path of the file to be decompressed.
+   * @param outFile Indicates the path of the decompressed file.
+   * @return Returns error code.
+   */
+  function unzipFile(inFile:string, outFile:string, options: Options): Promise<void>;
+}