The invention provides a residual vegetable disinfection and grinding integrated device which is characterized by comprising a support, wherein a conveying unit, a grinding unit, a disinfection unit and a driving unit are arranged on the support; the conveying unit is horizontally arranged at the upper part of the support; one end of the conveying unit is a feed end; the other end of the conveying unit is a discharge end; the grinding unit comprises a grinder body that is arranged on one side, close to the discharge end, of the support; a feed port of the grinder body is connected with the discharge end of the conveying unit; a discharge port of the grinder body is located at the bottom of the support; the disinfection unit comprises a plurality of nozzles connected with the conveying unit and the discharge port of the grinder body in a fastening manner; and each nozzle is connected with a disinfection case on the support in a fastening manner via a pipeline.