Health codes are based on actual real data, which can be generated by citizens or people who have returned to work through their own online declarations. After background review, the QR code belongs to individuals. As an individual in and out of electronic certificate, the QR code can be declared at one time, which is universal in the whole city. The introduction of health regulations aims to make the resumption of work more accurate, scientific and orderly. On June 65438+February 10, 2020, National Health Commission, National Medical Insurance Bureau and state administration of traditional chinese medicine jointly issued a notice on further promoting the "five one services" action of Internet plus medical and health care, explicitly requiring all localities to implement national mutual recognition of health codes and communicate with one code.