The pv virus generally refers to poliovirus, which is mainly transmitted through the fecal-oral route, and can be caused by contact with contaminated water, food, and daily necessities. Poliovirus is mainly transmitted through the fecal-oral route. In the early stage of infection, patients mainly excrete the virus through the nasopharynx, and as the disease progresses, the virus is then excreted in the feces, which is then dispersed through contaminated water, food, and daily necessities. In addition, live attenuated vaccines taken orally may regain their virulence in the external environment after being excreted in the feces, thus infecting other susceptible persons. Poliomyelitis is an infectious disease, vaccination is the main and effective measure to prevent this disease, commonly used vaccines are oral polio vaccine (OPV), inactivated polio vaccine (IPV). Infection with poliovirus should be promptly consulted, isolated and treated in accordance with medical advice.