Abstract:Cryptosporidiosis is a serious zoonotic gastrointestinal disease caused by Cryptosporidium parasites on the gastrointestinal tract of humans, domestic animals, and a variety of wild animals. Cryptosporidium not only threatens human health but also seriously affects the development of animal husbandry. In recent years, with the deepening of research, the prevalence of Cryptosporidium has shown many new characteristics, and the harm has far exceeded people's estimates. These characteristics are mainly manifested in: infecting livestock, and increasing the risk of human infection. Mixed infection with other animal pathogens aggravates the harm; Infecting wild animals with a natural epidemic focus. Infection with marine and aquatic animals causes water pollution. Human group infection is caused by water and food transmission. The outbreak of infection is serious to the population. Therefore, it is of great significance to carry out indepth research on the epidemic and prevention and control of Cryptosporidium to improve the level of public health.