The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has been infected rapidly and is generally susceptible to population. Moreover, it has become the most serious public health problem in the world. In the process of coronavirus disease 2019 (COVID-19) treatment, the traditional Chinese medicine (TCM) intervention has achieved positive efficacy and which is widely recognized. However, the COVID-19 epidemic is still very serious, especially due to the characteristics of asymptomatic infection such as concealment, limitations and subjective symptoms, which has increased the difficulty of prevention and control. In view of asymptomatic infection, isolation is the main management. There is little mention of specific treatment options in each version of COVID-19 treatment plan. Through systematic study of TCM theory, we explored the way of diagnosis and treatment of asymptomatic infections. Based on the theory of latent evil, clearing away latent pathogens to truncate the course of disease and reduce the incidence. Based on the theory of prevention of disease, strengthen the lung and stomach to protect the place from pathogen and prevent the transmission of disease evil. It is supplemented by accurate treatment according to individual, timing and local conditions, in order to provide reference for the treatment of asymptomatic infection.