Tracing the contacts exposed to high risk behaviors of HIV-infected patients can facilitate the diagnosis and discovery of HIV positive individuals for timely treatment and intervention to reduce secondary transmission,which is of great importance for the control of AIDS epidemic.With the development of HIV gene sequence detection and analysis technology,the application of HIV molecular transmission network in traditional contact tracing based on epidemiological investigation can contribute to the accurate reveal of HIV transmission mode,clarification of HIV transmission characteristics and identification of the population at high risk for HIV infection to provide evidence-based insights for the accurate prevention and control of AIDS.This paper summarized the progress in the research of tracing the contacts exposed to high risk behaviors of HIV-infected patients to provide reference for the AIDS prevention and control in the future.