The invention discloses a medical waste treatment method and medical waste treatment equipment, which comprise equipment and a treatment method carried out on the equipment, wherein the equipment is composed of a feeding device, a disinfection and sterilization tank, a high-temperature heating and control device and a crushing and volume reducing device; according to the equipment, the medical waste, when treated, is pushed into the disinfection and sterilization tank by virtue of a hydraulic piston in a reciprocating motion; the disinfection and sterilization tank which is horizontally arranged on the high-temperature heating device, driven by a motor, is heated at high temperature when rotating, high-temperature and high-pressure stream is generated from the interior of a sealed tank body, water comes from waste liquid carried in the medicinal waste, the high-temperature stream is cooled as temperature and time required by sterilization are achieved, so that the high-temperature stream is condensed as non-toxic and sterile distilled water which is absorbed by the waste once again, and the medical waste is automatically discharged from an inner spiral plate; the generation of waste gas and waste water is avoided in the entire treatment process, and the disinfected and sterilized medical waste reaches the standard of safe emission; therefore, the method and the equipment are environment-friendly and suitable for large-scale treatment of the medical waste.