The invention relates to the technical field of internet-of-things smart home equipment, and provides internet-of-things smart home decontamination closestool equipment, which comprises a urinal, a blow-off pipe, a closestool body, a water discharging button and a water tank, wherein the urinal is formed in the top face of the closestool body, the water tank is arranged close to the periphery of the urinal, the water discharging button is installed at the top end of the water tank, a closestool cover is hinged to the top end, close to the bottom surface of the water tank, of the urinal, a defecation opening is formed in the bottom surface of the urinal, the defecation opening is communicated with a discharge pipe, and excrement is discharged through the discharge pipe. When water flow is sprayed to the inner wall of the urinal through water spraying openings, a cleaning and brushing rod is pushed to swing downwards at the top end of the inner wall of the urinal, excrement adhering to the inner wall of the urinal is brushed away in a reciprocating mode by a cleaning and brushing plate at the top end of the cleaning and brushing rod, and similar excrement adhering to the inner wall of the urinal is removed, thus, after the closestool is used by a person, the inner wall of the urinal is subjected to self-cleaning treatment, so that the cleanness of the closestool is improved.