diff --git a/OAT.xml b/OAT.xml
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+<?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.
+-->
+<!-- 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>
+        <policylist>
+            <policy name="projectPolicy" desc="">	
+                <policyitem type="compatibility" name="MIT|GPLStyleLicense" path="conformance/third_party/jsoncpp/jsoncpp.cpp" desc="MIT|GPLStyleLicense "/>
+                <policyitem type="compatibility" name="MIT|GPLStyleLicense" path="conformance/third_party/jsoncpp/json.h" desc="MIT|GPLStyleLicense "/>
+            </policy>
+        </policylist>
+        <filefilterlist>
+            <filefilter name="defaultPolicyFilter" desc="Filters for compatibility，license header policies">
+                <filteritem type="filename" name="generate_descriptor_proto.sh" desc="no license header"/>
+                <filteritem type="filename" name="kokoro/docs/publish-python.sh" desc="no license header"/>
+                <filteritem type="filename" name="autogen.sh" desc="no license header"/>
+                <filteritem type="filename" name="php/generate_descriptor_protos.sh" desc="no license header"/>
+                <filteritem type="filename" name="Makefile.am" desc="no license header"/>
+                <filteritem type="filename" name="kokoro/release/python/linux/config.sh" desc="no license header"/>
+                <filteritem type="filename" name="post_process_dist.sh" desc="no license header"/>
+                <filteritem type="filename" name="objectivec/generate_well_known_types.sh" desc="no license header"/>
+                <filteritem type="filename" name="configure.ac" desc="no license header"/>
+            </filefilter>
+        </filefilterlist>
+    </oatconfig>
+</configuration>