1. Open related applications such as "Health Code" or "Healthy China" on the mobile phone.
2. Find the function entry such as "Electronic Health Certificate" or "Health Certificate" in the application, and click Enter.
3. According to specific requirements, enter personal identity information, health status and other related information for authentication.
4. After passing the certification, you can check your electronic health certificate. Usually, the electronic health certificate will display information such as name, ID number and health status, and there will be a QR code or bar code, which can be used for code scanning verification.