Legal analysis: Health code is based on actual data, which can be generated by citizens or people who have returned to work through 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 introduction of the health code aims to make the work of returning to work more accurate, scientific and orderly.
Legal basis: Law of People's Republic of China (PRC) on the Prevention and Control of Infectious Diseases Article 2 The state implements the policy of putting prevention first, combining prevention with control, classified management, relying on science and relying on the masses in the prevention and control of infectious diseases.