The invention relates to a closestool which comprises a closestool base and a water tank. The closestool base is provided with a water sprayer, the water sprayer is provided with a hydrogen-enriched water outlet towards the human buttocks. A hydrogen-enriched ozone preparation device is arranged in the water tank and provided with a disinfectant fluid cavity and a hydrogen-enriched cavity for manufacturing hydrogen-enriched water; ozone disinfectant fluid prepared by the disinfectant fluid cavity disinfects the closestool, the edge of a seat of the closestool base is provided with an air cushion, a piston plate is arranged in the hydrogen-enriched cavity and divides the hydrogen-enriched cavity into an air cavity and a water cavity up and down, and the air cavity is communicated with the water cavity. The water cavity is communicated with the hydrogen-enriched water outlet. The closestool can perform comprehensive disinfection, can treat diseases such as constipation and hemorrhoids, and is more hygienic, safer and healthier to use.