Take Alipay platform to view Hainan health code as an example. The specific process is as follows: 1. Open and log in to Alipay account, click "More" and select "Health Code". 2. Select Hainan area and click "View Now". You can see the number on the hygiene code, which is the hygiene code number. The health code number is the ID number, and the ID number of the health code is the special number of the health code. This is the only number that can prove your identity and related health information. The "health code" is based on real data and can be generated by citizens or people who have returned to work through their own online declaration and background audit. The health code number is the ID number, and the ID number of the health code is the special number of the health code. This is the only number that can prove your identity and related health information. The "health code" is based on real data and can be generated by citizens or people who have returned to work through their own online declaration and background audit. As an individual entering and leaving electronic certificate locally, the QR code can be declared once, which is universal in the whole city. The application scope of health code covers community management, resumption of business, transportation, starting school, drug purchase registration, supermarkets and shopping malls, which can help communities, enterprises and schools to do key work such as epidemic prevention management and epidemic control. In the prevention and control of epidemic situation and the resumption of production, health code can realize efficient personnel flow management, which has been improved in office buildings, shopping malls, subways, railway stations and other crowded places.