diff --git a/OAT.xml b/OAT.xml
new file mode 100755
index 0000000000000000000000000000000000000000..4a96948949363b262617f00e57aa33e9b50791d2
--- /dev/null
+++ b/OAT.xml
@@ -0,0 +1,80 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- 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.
+
+     Notes:
+     This is project config file for OpenHarmony OSS Audit Tool, if you have any questions or concerns, please email chenyaxun@huawei.com.
+-->
+<!-- OAT(OSS Audit Tool) configuration guide:
+basedir: Root dir, the basedir + project path is the real source file location.
+licensefile:
+1.If the project don't have "LICENSE" in root dir, please define all the license files in this project in , OAT will check license files according to this rule.
+
+tasklist(only for batch mode):
+1. task: Define oat check thread, each task will start a new thread.
+2. task name: Only an name, no practical effect.
+3. task policy: Default policy for projects under this task, this field is required and the specified policy must defined in policylist.
+4. task filter: Default filefilter for projects under this task, this field is required and the specified filefilter must defined in filefilterlist.
+5. task project: Projects to be checked, the path field define the source root dir of the project.
+
+
+policyList:
+1. policy: All policyitems will be merged to default OAT.xml rules, the name of policy doesn't affect OAT check process.
+2. policyitem: The fields type, name, path, desc is required, and the fields rule, group, filefilter is optional,the default value is:
+<policyitem type="" name="" path="" desc="" rule="may" group="defaultGroup" filefilter="defaultPolicyFilter"/>
+3. policyitem type:
+    "compatibility" is used to check license compatibility in the specified path;
+    "license" is used to check source license header in the specified path;
+    "copyright" is used to check source copyright header in the specified path;
+    "import" is used to check source dependency in the specified path, such as import ... ,include ...
+    "filetype" is used to check file type in the specified path, supported file types: archive, binary
+    "filename" is used to check whether the specified file exists in the specified path(support projectroot in default OAT.xml), supported file names: LICENSE, README, README.OpenSource
+
+4. policyitem name: This field is used for define the license, copyright, "*" means match all, the "!" prefix means could not match this value. For example, "!GPL" means can not use GPL license.
+5. policyitem path: This field is used for define the source file scope to apply this policyitem, the "!" prefix means exclude the files. For example, "!.*/lib/.*" means files in lib dir will be exclude while process this policyitem.
+6. policyitem rule and group: These two fields are used together to merge policy results. "may" policyitems in the same group means any one in this group passed, the result will be passed.
+7. policyitem filefilter: Used to bind filefilter which define filter rules.
+8. filefilter: Filter rules, the type filename is used to filter file name, the type filepath is used to filter file path.
+
+Note:If the text contains special characters, please escape them according to the following rules:
+" == &gt;
+& == &gt;
+' == &gt;
+< == &gt;
+> == &gt;
+-->
+<configuration>
+    <oatconfig>
+        <licensefile>LICENSE</licensefile>
+        <policylist>
+            <policy name="projectPolicy" desc="">
+            </policy>
+        </policylist>
+        <filefilterlist>
+            <filefilter name="defaultPolicyFilter" desc="Filters for compatibility license header policies">
+                <filteritem type="filepath" name=".*" desc="The files involved in compilation are the LGPL protocol. They are used in dynamic link mode."/>
+            </filefilter>
+            <filefilter name="copyrightPolicyFilter" desc="Filters for copyright header policies">
+                <filteritem type="filename" name="*.conf" desc="Pulseaudio configuration files"/>
+                <filteritem type="filename" name="*.pa" desc="Pulseaudio startup script files"/>
+                <filteritem type="filepath" name="services/src/audio_policy/server/etc/audio_policy_config.xml" desc="Pulseaudio policy configuration file"/>
+                <filteritem type="filepath" name="pulseaudio/src/pulse/ohos_pa_volume.c" desc="Pulseaudio volume interface file"/>
+                <filteritem type="filepath" name="pulseaudio/src/daemon/ohos_pa_main.c" desc="Pulseaudio daemon file with no systemd"/>
+            </filefilter>
+            <filefilter name="binaryFileTypePolicyFilter" desc="Filters for binary file policies">
+                <filteritem type="filename" name="*.png" desc="Audio service design diagrams"/>
+            </filefilter>
+        </filefilterlist>
+    </oatconfig>
+</configuration>
diff --git a/frameworks/innerkitsimpl/libsnd/BUILD.gn b/frameworks/innerkitsimpl/libsnd/BUILD.gn
index df184f0ab112d93087a947cc4062a9bf37c4c38b..0bcf0c0013f0056e7ad5345ac114137e89e24253 100644
--- a/frameworks/innerkitsimpl/libsnd/BUILD.gn
+++ b/frameworks/innerkitsimpl/libsnd/BUILD.gn
@@ -1,3 +1,16 @@
+# 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("//build/ohos.gni")
 
 libsndfile_dir = "//third_party/libsnd"