The invention discloses a livestock and poultry wastewater treatment method. The livestock and poultry wastewater treatment method comprises the following step: performing electrolytic treatment on livestock and poultry breeding wastewater including both antibiotics and heavy metal ions to enable antibiotics in wastewater to be subjected to oxidation reaction for inactivation and the heavy metal ions to be subjected to reduction reaction to be converted into sediments. The livestock and poultry wastewater treatment method can reclaim heavy metals while removing antibiotics in livestock and poultry wastewater, and reaction equipment is small in occupation, high in efficiency and stable in running.