diff --git a/services/BUILD.gn b/services/BUILD.gn
index aa10b3988a8237194a79b72ab2e69da92052e3f5..2fefab42bc3e02ef66da2e8dd798ebb3c226c498 100644
--- a/services/BUILD.gn
+++ b/services/BUILD.gn
@@ -19,6 +19,7 @@ group("fms") {
   deps = [
     ":fms_server",
     ":fms_service.cfg",
+    ":external_file_manager_hap",
   ]
 }
 
@@ -91,3 +92,39 @@ ohos_shared_library("fms_server") {
     "samgr_standard:samgr_proxy",
   ]
 }
+
+### external file manager hap
+ohos_hap("external_file_manager_hap") {
+  hap_profile = "file_extension_hap/entry/src/main/module.json"
+    deps = [
+    ":external_file_manager_js_assets",
+    ":external_file_manager_resources",
+  ]
+  certificate_profile = "signature/fileextension.p7b"
+  hap_name = "external_file_manager"
+  subsystem_name = "filemanagement"
+  part_name = "user_file_service"
+  module_install_dir = "app/com.ohos.UserFile.ExternalFileManager"
+}
+
+ohos_js_assets("external_file_manager_js_assets") {
+  hap_profile = "file_extension_hap/entry/src/main/module.json"
+  ets2abc = true
+  source_dir = "file_extension_hap/entry/src/main/ets"
+}
+
+ohos_app_scope("external_file_manager_app_profile") {
+  app_profile = "file_extension_hap/AppScope/app.json"
+  sources = [ "file_extension_hap/AppScope/resources" ]
+}
+
+ohos_resources("external_file_manager_resources") {
+  sources = [
+    "file_extension_hap/entry/src/main/resources",
+  ]
+  deps = [
+    ":external_file_manager_app_profile",
+  ]
+  hap_profile = "file_extension_hap/entry/src/main/module.json"
+}
+### external file manager hap
\ No newline at end of file
diff --git a/services/file_extension_hap/AppScope/app.json b/services/file_extension_hap/AppScope/app.json
new file mode 100644
index 0000000000000000000000000000000000000000..9ed7e1acf9559e97986f90dcbbec33f3cfc6bd63
--- /dev/null
+++ b/services/file_extension_hap/AppScope/app.json
@@ -0,0 +1,11 @@
+{
+  "app": {
+    "bundleName": "com.ohos.UserFile.ExternalFileManager",
+    "versionCode": 100,
+    "versionName": "1.0.0",
+    "minAPIVersion": 9,
+    "targetAPIVersion": 9,
+    "icon": "$media:app_icon",
+    "label": "$string:app_name"
+  }
+}
diff --git a/services/file_extension_hap/AppScope/resources/base/element/string.json b/services/file_extension_hap/AppScope/resources/base/element/string.json
new file mode 100644
index 0000000000000000000000000000000000000000..bdb9ac3627d877c9908763446d259fc514e50c41
--- /dev/null
+++ b/services/file_extension_hap/AppScope/resources/base/element/string.json
@@ -0,0 +1,8 @@
+{
+  "string": [
+    {
+      "name": "app_name",
+      "value": "ExternalFileManager"
+    }
+  ]
+}
diff --git a/services/file_extension_hap/AppScope/resources/base/media/app_icon.png b/services/file_extension_hap/AppScope/resources/base/media/app_icon.png
new file mode 100644
index 0000000000000000000000000000000000000000..ce307a8827bd75456441ceb57d530e4c8d45d36c
Binary files /dev/null and b/services/file_extension_hap/AppScope/resources/base/media/app_icon.png differ
diff --git a/services/file_extension_hap/build-profile.json5 b/services/file_extension_hap/build-profile.json5
new file mode 100644
index 0000000000000000000000000000000000000000..8fac20813cb081694e75ab50d19a5faac524c66c
--- /dev/null
+++ b/services/file_extension_hap/build-profile.json5
@@ -0,0 +1,40 @@
+/*
+ * 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.
+ */
+{
+  "app": {
+    "compileSdkVersion": 9,
+    "compatibleSdkVersion": 9,
+    "products": [
+      {
+        "name": "default",
+        "signingConfig": "default",
+      }
+    ]
+  },
+  "modules": [
+    {
+      "name": "entry",
+      "srcPath": "./entry",
+      "targets": [
+        {
+          "name": "default",
+          "applyToProducts": [
+            "default"
+          ]
+        }
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/services/file_extension_hap/entry/build-profile.json5 b/services/file_extension_hap/entry/build-profile.json5
new file mode 100644
index 0000000000000000000000000000000000000000..d3089f7ba484c6385983234a1f147c161a5d9cdd
--- /dev/null
+++ b/services/file_extension_hap/entry/build-profile.json5
@@ -0,0 +1,24 @@
+/*
+ * 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.
+ */
+{
+  "apiType": 'stageMode',
+  "buildOption": {
+  },
+  "targets": [
+    {
+      "name": "default",
+    }
+  ]
+}
\ No newline at end of file
diff --git a/services/file_extension_hap/entry/hvigorfile.js b/services/file_extension_hap/entry/hvigorfile.js
new file mode 100644
index 0000000000000000000000000000000000000000..d7720ee6a7aad5c617d1fd2f6fc8c87067bfa32c
--- /dev/null
+++ b/services/file_extension_hap/entry/hvigorfile.js
@@ -0,0 +1,2 @@
+// Script for compiling build behavior. It is built in the build plug-in and cannot be modified currently.
+module.exports = require('@ohos/hvigor-ohos-plugin').hapTasks
diff --git a/services/file_extension_hap/entry/src/main/ets/Application/AbilityStage.ts b/services/file_extension_hap/entry/src/main/ets/Application/AbilityStage.ts
new file mode 100644
index 0000000000000000000000000000000000000000..18d98c8eff2695a4f4ff6fa1d03e9da70b763a96
--- /dev/null
+++ b/services/file_extension_hap/entry/src/main/ets/Application/AbilityStage.ts
@@ -0,0 +1,22 @@
+/*
+ * 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 AbilityStage from "@ohos.application.AbilityStage"
+import hilog from '@ohos.hilog'
+
+export default class MyAbilityStage extends AbilityStage {
+    onCreate() {
+        hilog.info(0x0001, 'js server tag dsa', "MyAbilityStage onCreate")
+    }
+}
\ No newline at end of file
diff --git a/services/file_extension_hap/entry/src/main/ets/FileExtensionAbility/FileExtensionAbility.ts b/services/file_extension_hap/entry/src/main/ets/FileExtensionAbility/FileExtensionAbility.ts
new file mode 100644
index 0000000000000000000000000000000000000000..32c6778f69c2fcbb935be204eb84fe7c6b001107
--- /dev/null
+++ b/services/file_extension_hap/entry/src/main/ets/FileExtensionAbility/FileExtensionAbility.ts
@@ -0,0 +1,263 @@
+/*
+ * 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 Extension from '@ohos.application.FileExtensionAbility'
+import uriClass from '@ohos.uri'
+import fileio from '@ohos.fileio'
+import hilog from '@ohos.hilog'
+import fileExtensionInfo from "@ohos.fileExtensionInfo"
+
+const FLAG = fileExtensionInfo.FLAG;
+
+export default class FileExtAbility extends Extension {
+    onCreate(want) {
+        hilog.info(0x0001, 'js server tag dsa', 'FileExtAbility onCreate, want:' + want.abilityName);
+    }
+
+    getPath(uri) {
+        let uriObj = new uriClass.URI(uri);
+        let path = uriObj.path;
+        hilog.info(0x0001, 'js server tag dsa', 'getPath is ' + path);
+        return path;
+    }
+
+    genNewFileUri(uri, displayName) {
+        let arr = uri.split('/');
+        let newFileUri = uri;
+        if (arr.pop() == '') {
+            newFileUri += displayName;
+        } else {
+            newFileUri += '/' + displayName;
+        }
+        hilog.info(0x0001, 'js server tag dsa', 'genNewFileUri is ' + newFileUri);
+        return newFileUri;
+    }
+
+    getFileName(uri) {
+        let arr = uri.split('/');
+        let name = arr.pop();
+        if (name == '') {
+            name = arr.pop();
+        }
+        return name;
+    }
+
+    renameUri(uri, displayName) {
+        let arr = uri.split('/');
+        let newFileUri = '';
+        if (arr.pop() == '') {
+            arr.pop();
+            arr.push(displayName)
+            arr.push('');
+        } else {
+            arr.push(displayName)
+        }
+        for (var index = 0; index < arr.length; index++) {
+            if (arr[index] == '') {
+                newFileUri += '/';
+            } else if (index == arr.length - 1) {
+                newFileUri += arr[index];
+            } else {
+                newFileUri += arr[index] + '/';
+            }
+        }
+        hilog.info(0x0001, 'js server tag dsa', 'renameUri is ' + newFileUri);
+        return newFileUri;
+    }
+
+    listDir(path, cb) {
+        hilog.info(0x0001, 'js server tag dsa', 'listDir: ' + path);
+        try {
+            let stat = fileio.statSync(path);
+            if (stat.isDirectory()) {
+                let dir = fileio.opendirSync(path);
+                let hasNextFile = true;
+                while (hasNextFile) {
+                    try {
+                        let dirent = dir.readSync();
+                        this.listDir(path + '/' + dirent.name, cb);
+                    } catch (e) {
+                        hilog.info(0x0001, 'js server tag dsa', 'listDir dir.readSync catch' + e);
+                        hasNextFile = false;
+                        cb(path);
+                    }
+                }
+            } else {
+                cb(path);
+            }
+        } catch (e) {
+            hilog.info(0x0001, 'js server tag dsa', 'listDir catch ' + e + ' ' + path);
+            cb(path);
+        }
+    }
+
+    openFile(sourceFileUri, flags) {
+        hilog.info(0x0001, 'js server tag dsa', 'openFile, uri:' + sourceFileUri + ',flags:' + flags);
+        let fd = 0;
+        try {
+            let path = this.getPath(sourceFileUri);
+            fd = fileio.openSync(path, flags, 0o666);
+        } catch (e) {
+            hilog.info(0x0001, 'js server tag dsa', 'openFile catch' + e);
+            fd = -1;
+        }
+
+        return fd;
+    }
+
+    closeFile(fd, uri) {
+        try {
+            fileio.closeSync(fd);
+            return true;
+        } catch (e) {
+            hilog.info(0x0001, 'js server tag dsa', 'closeFile catch' + e);
+            return false;
+        }
+    }
+
+    createFile(parentUri, displayName) {
+        hilog.info(0x0001, 'js server tag dsa', 'createFile, uri:' + parentUri + ', displayName:' + displayName);
+        try {
+            let newFileUri = this.genNewFileUri(parentUri, displayName);
+            let path = this.getPath(newFileUri);
+            fileio.openSync(path, 0o100, 0o666);
+            return newFileUri;
+        } catch (e) {
+            hilog.info(0x0001, 'js server tag dsa', 'createFile catch' + e);
+            return '';
+        }
+    }
+
+    mkdir(parentUri, displayName) {
+        hilog.info(0x0001, 'js server tag dsa', 'mkdir, uri:' + parentUri + ', displayName:' + displayName);
+        try {
+            let newFileUri = this.genNewFileUri(parentUri, displayName);
+            let path = this.getPath(newFileUri);
+            fileio.mkdirSync(path);
+            return newFileUri;
+        } catch (e) {
+            hilog.info(0x0001, 'js server tag dsa', 'mkdir catch' + e);
+            return '';
+        }
+    }
+
+    delete(selectFileUri) {
+        hilog.info(0x0001, 'js server tag dsa', 'delete, uri:' + selectFileUri);
+        let path = this.getPath(selectFileUri);
+        let code = 0;
+        this.listDir(path, function (filePath) {
+            try {
+                fileio.unlinkSync(filePath);
+            } catch (e) {
+                hilog.info(0x0001, 'js server tag dsa', 'delete catch' + e);
+                code = -1;
+            }
+        });
+
+        return code;
+    }
+
+    move(sourceFileUri, targetParentUri) {
+        hilog.info(0x0001, 'js server tag dsa', 'move, sourceFileUri:' + sourceFileUri + ', targetParentUri:' + targetParentUri);
+        try {
+            let displayName = this.getFileName(sourceFileUri);
+            let newFileUri = this.genNewFileUri(targetParentUri, displayName);
+            let oldPath = this.getPath(sourceFileUri);
+            let newPath = this.getPath(newFileUri);
+            fileio.renameSync(oldPath, newPath);
+            return newFileUri;
+        } catch (e) {
+            hilog.info(0x0001, 'js server tag dsa', 'rename catch' + e);
+            return '';
+        }
+    }
+
+    rename(sourceFileUri, displayName) {
+        hilog.info(0x0001, 'js server tag dsa', 'rename, sourceFileUri:' + sourceFileUri + ', displayName:' + displayName);
+        try {
+            let newFileUri = this.renameUri(sourceFileUri, displayName);
+            let oldPath = this.getPath(sourceFileUri);
+            let newPath = this.getPath(newFileUri);
+            fileio.renameSync(oldPath, newPath);
+            return newFileUri;
+        } catch (e) {
+            hilog.info(0x0001, 'js server tag dsa', 'rename catch' + e);
+            return '';
+        }
+    }
+
+    query(sourceFileUri) {
+        hilog.info(0x0001, 'js server tag dsa', 'query, sourceFileUri:' + sourceFileUri);
+        try {
+            let path = this.getPath(sourceFileUri);
+            let stat = fileio.statSync(path);
+            return {
+                uri: sourceFileUri,
+                fileName: this.getFileName(sourceFileUri),
+                mode: stat.mode,
+                size: stat.size,
+                mtime: stat.mtime,
+                mimiType: '',
+            };
+        } catch (e) {
+            hilog.info(0x0001, 'js server tag dsa', 'query catch' + e);
+            return null;
+        }
+    }
+
+    listFile(sourceFileUri) {
+        hilog.info(0x0001, 'js server tag dsa', 'listFile, sourceFileUri: ' + sourceFileUri);
+
+        let infos = [];
+        try {
+            let path = this.getPath(sourceFileUri);
+            let dir = fileio.opendirSync(path);
+            let hasNextFile = true;
+            while (hasNextFile) {
+                try {
+                    let dirent = dir.readSync();
+                    let stat = fileio.statSync(path + '/' + dirent.name);
+                    infos.push({
+                        uri: this.genNewFileUri(sourceFileUri, dirent.name),
+                        fileName: dirent.name,
+                        mode: stat.mode,
+                        size: stat.size,
+                        mtime: stat.mtime,
+                        mimiType: '',
+                    });
+                } catch (e) {
+                    hilog.info(0x0001, 'js server tag dsa', 'dir.readSync catch' + e);
+                    hasNextFile = false;
+                }
+            }
+        } catch (e) {
+            hilog.info(0x0001, 'js server tag dsa', 'listFile catch' + e);
+        }
+
+        hilog.info(0x0001, 'js server tag dsa', 'listFile return: ' + JSON.stringify(infos));
+        return infos;
+    }
+
+    getRoots() {
+        hilog.info(0x0001, 'js server tag dsa', 'getRoots');
+        let roots = [{
+            uri: 'fileAccess:///data/storage/el1/bundle/storage_daemon',
+            displayName: 'storage_daemon',
+            deviceId: '',
+            flags: FLAG.SUPPORTS_WRITE | FLAG.SUPPORTS_DELETE | FLAG.SUPPORTS_RENAME | FLAG.SUPPORTS_COPY
+                | FLAG.SUPPORTS_MOVE | FLAG.SUPPORTS_REMOVE | FLAG.DIR_SUPPORTS_CREATE | FLAG.DIR_PREFERS_LAST_MODIFIED,
+        }];
+        return roots;
+    }
+};
\ No newline at end of file
diff --git a/services/file_extension_hap/entry/src/main/module.json b/services/file_extension_hap/entry/src/main/module.json
new file mode 100644
index 0000000000000000000000000000000000000000..20916b6afa6dc19b9080114a6bceaf8c1be1d94e
--- /dev/null
+++ b/services/file_extension_hap/entry/src/main/module.json
@@ -0,0 +1,25 @@
+{
+  "module": {
+    "name": "entry",
+    "type": "entry",
+    "srcEntrance": "./ets/Application/AbilityStage.ts",
+    "mainElement": "FileExtensionAbility",
+    "deviceTypes": [
+      "phone",
+      "tablet"
+    ],
+    "deliveryWithInstall": true,
+    "installationFree": false,
+    "pages": "$profile:main_pages",
+    "uiSyntax": "ets",
+    "abilities": [],
+    "extensionAbilities": [
+      {
+        "srcEntrance": "./ets/FileExtensionAbility/FileExtensionAbility.ts",
+        "name": "FileExtensionAbility",
+        "type": "fileAccess",
+        "visible": true
+      }
+    ]
+  }
+}
\ No newline at end of file
diff --git a/services/file_extension_hap/entry/src/main/resources/base/element/string.json b/services/file_extension_hap/entry/src/main/resources/base/element/string.json
new file mode 100644
index 0000000000000000000000000000000000000000..c4e8611bfbd8bb3177924f05e7e22a7ca3dcf5dd
--- /dev/null
+++ b/services/file_extension_hap/entry/src/main/resources/base/element/string.json
@@ -0,0 +1,12 @@
+{
+  "string": [
+    {
+      "name": "entry_desc",
+      "value": "description"
+    },
+    {
+      "name": "description_serviceability",
+      "value": "description_serviceability"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/services/file_extension_hap/entry/src/main/resources/base/media/icon.png b/services/file_extension_hap/entry/src/main/resources/base/media/icon.png
new file mode 100644
index 0000000000000000000000000000000000000000..ce307a8827bd75456441ceb57d530e4c8d45d36c
Binary files /dev/null and b/services/file_extension_hap/entry/src/main/resources/base/media/icon.png differ
diff --git a/services/file_extension_hap/entry/src/main/resources/base/profile/main_pages.json b/services/file_extension_hap/entry/src/main/resources/base/profile/main_pages.json
new file mode 100644
index 0000000000000000000000000000000000000000..b12d9e9faa33835d362c73333632d70b7c61328a
--- /dev/null
+++ b/services/file_extension_hap/entry/src/main/resources/base/profile/main_pages.json
@@ -0,0 +1,3 @@
+{
+  "src": []
+}
\ No newline at end of file
diff --git a/services/file_extension_hap/hvigorfile.js b/services/file_extension_hap/hvigorfile.js
new file mode 100644
index 0000000000000000000000000000000000000000..5f2735e3deeaf655828407544bbed9365c258278
--- /dev/null
+++ b/services/file_extension_hap/hvigorfile.js
@@ -0,0 +1,2 @@
+// Script for compiling build behavior. It is built in the build plug-in and cannot be modified currently.
+module.exports = require('@ohos/hvigor-ohos-plugin').appTasks
\ No newline at end of file
diff --git a/services/signature/fileextension.p7b b/services/signature/fileextension.p7b
new file mode 100644
index 0000000000000000000000000000000000000000..ddb74239918c96a341ee6dc7d118aba46355e5d0
Binary files /dev/null and b/services/signature/fileextension.p7b differ