# How to Contribute<a name="EN-US_TOPIC_0000001055208082"></a>

## Contributing Code<a name="en-us_topic_0000001053868136_section10170447161315"></a>

## Before You Start<a name="en-us_topic_0000001053868136_section2734837154520"></a>

**Signing the Developer Certificate of Origin**

You must sign the Developer Certificate of Origin (DCO) before you can contribute to the community.

Click [here](https://dco.openharmony.io/sign/Z2l0ZWUlMkZvcGVuX2hhcm1vbnk=) to sign the DCO, and click [here](https://dco.openharmony.io/check-sign-status) to check the signing status.

**Code of Conduct**

OpenHarmony is an open source community that relies entirely on the friendly, welcoming environment of the community. Read and abide by the community's  [Code of Conduct](code-of-conduct.md#EN-US_TOPIC_0000001055368056)  before contributing to the community.

## **Finding the SIG Group You Are Interested**

For details about how to participate in Special Interest Group (SIG), see **SIG Governance**.

## Starting Contributing<a name="en-us_topic_0000001053868136_section184321756134618"></a>

For details about how to contribute to code, see  [Code Contributing ](code-contribution.md).

## Auto-Test

For details about how to develop test cases based on test requirements, see [Test Subsystem](../readme/test_subsystem.md).

## Contributing Documents<a name="en-us_topic_0000001053868136_section11234185012131"></a>

For details, see  [Documentation Contribution](documentation-contribution.md).

## Communication in Community<a name="en-us_topic_0000001053868136_section98614457153"></a>

For details, see  [Communication in Community](communication-in-community.md#EN-US_TOPIC_0000001054608107).