During the new crown pneumonia epidemic，the health code was used to track the social movement of at-risk groups and became a data infrastructure for the governance of social order in the context of the normalization of the epidemic. This study uses critical technical discourse analysis methods to study how epidemic tracking technology is constructed and institutionalized，and how cultural，political，and economic structural factors affect the “invention”，acceptance，and acceptance of health codes in Chinese society. Use and embed in people’s daily life. Studies have found that the health code is an accidental technical artifact with multiple factors that work together. However，it has also experienced a long accumulation of technology. The QR code，global geographic positioning information system and cloud computing are integrated on the smart phone，which is the health code. The production provides technical conditions. The government，platform and society have jointly constructed a domestication network of health codes. The government dominates the knowledge production and discourse expression of the health code，and uses its own authority to make the use of the health code a social system. The platform provides resources to maintain the operation of the health code，such as bandwidth，algorithms，management，and API interfaces，and ensures the innovation and stability of the health code through software design and market strategies，and assumes the social responsibility of the platform.