Polio vaccine and polio vaccine can be given in one day. The polio vaccine is to prevent poliomyelitis. Polio is mainly caused by poliovirus infection, once the onset of the disease, the harm is relatively large, easy to cause polio, which can lead to permanent hemiplegia, affecting normal life, so you need to actively prevent. The two vaccines should be injected at different sites, not in the same location, but on the left or right side of the shoulder deltoid, respectively. The first and second shots of polio need to be given at least twenty-eight days apart, while polio needs to be given at two, three, or four months, and polio is given at three, four, or five months. So there are two overlapping vaccinations that can be given at the same time and do not affect the child’s health.