Abstract: When the COVID-19 swept through Wuhan，the mobile cabin hospitals were like “life-saving arks”for many patients with minor illnesses. However，as the patients were in a state of panic and were unfamiliar with each other，the hospitals were in disorder at the beginning. Through the study of the network ethnography of Wuchang mobile cabin hospital，we found that the hospital completed the process of internal integration and order generation through a series of initiatives，such as building relationships of trust，creating collective identity，constructing community networks，and forming group norms. The process of internal integration of the hospital was the process of forming a micro-anti-risk community. The mobile cabin hospital community，characteristic of spatial aggregation，relational reciprocity，emotional identity and functional coordination，in turn，contributes to maintain order and function of the mobile cabin hospital，which brings theoretical enlightenment to the emergency management and risk prevention and control in the normalized epidemic prevention and control.

Key words: community, mobile cabin hospital, group identity, emergency management, risk prevention and control