1. Open the WeChat in your mobile phone, click the menu "WeChat" and click the "Search" icon in the upper right corner to enter the search.
2. Enter the keyword "health code" in the search interface, and click "national health code" provided by the national government service platform in the search results.
3. Click "Allow" on the page of authorizing the national government service platform to authorize it to use its own public information and identity information.
4. On the pop-up national government service platform, apply for identity and mobile phone information page, and click "Agree to authorize".