The invention provides a self-sterilizing medical garbage can, and relates to the technical field of medical treatment. A water collecting pipe is arranged on one side of an outer barrel, a wire is arranged on the bottom end of the water collecting pipe, a steam box is arranged on the bottom end of the outer barrel, a plurality of steam cooling holes are formed in the top end of the steam box, a heating block is arranged on the bottom end of the steam box, an inner barrel is arranged on the top end of the steam box, a first stainless steel pipe is arranged on one side of the inner barrel, a first nozzle is arranged on the top end of the first stainless steel pipe, a snap switch is arranged on the top end of the first nozzle, a first garbage can inner cover is arranged on the top end of thesnap switch, a timer is arranged on one side of the first garbage can inner cover, and a first garbage can outer cover is arranged on the top end of the timer. The device is the self-sterilizing medical garbage can, peculiar smell of the garbage can can be prevented from emitting for the second time by the device, medical waste can be disinfected, so that viruses are prevented from infecting whenpatients use the garbage can, the physical health of patients is guaranteed, the medical garbage can is clean, the structure is simple, and the popularization is convenient.