The invention provides a triple antigen and antibody complex for preventing and controlling porcine viral diarrhea and a preparation method of the triple antigen and antibody complex. The triple antigen and antibody complex comprises an antigen and an antibody, wherein the antigen is a triple virus liquid obtained by mixing porcine transmissible gastroenteritis viruses, porcine epidemic diarrhea viruses and porcine rotavirus, and the antibody is a triple egg yolk antibody prepared on the basis of the antigen. The triple antigen and antibody complex for preventing and controlling porcine viral diarrhea is convenient and quick to use and capable of safely and effectively preventing and controlling the porcine viral diarrhea. The triple antigen and antibody complex can effectively reduce the body immunological stress response, increases the protection production speed, rapidly increases the body antibody titer and is prevented from the virus diffusion risk in production and use processes.