The African swine fever virus has been introduced into China and contaminated certain areas. Genotype I strains have been found in domestic pig samples，suggesting that the virus populations actually circulating in clinical samples are more complicated. Research on genotype I strains began after it was introduced to Portugal in 1957. After years of research accumulation，a large number of studies on the prevalence and distribution of genotype I strain，especially the development of live-attenuated vaccines based on genotype I strains，have been largely documented and developed in foreign countries，but there is no description in this regard in China. Therefore，the author reviewed the current status of the African swine fever virus genotype I strains and vaccine research developement，hoping to provide a reference for the scientific prevention and control of African swine fever in China.