The invention relates to an environment-friendly garbage can comprising a can body with the bottom end open. The upper end of the can body is connected with a cover through a rotating shaft, an ultraviolet transmitter and an ozone generator are arranged on the inner side of the can body, a power unit is arranged on the outer side of the can body, the ultraviolet transmitter and the ozone generator are connected with the power unit, the bottom of the can body is detachably connected with a purification container, the purification container is provided with a filter screen, a deodorization layer, a decomposition layer, a sterilization layer and a water storage chamber sequentially from top to bottom, and one side of the water storage chamber is connected with a water pipe. Liquid garbage can be purified and utilized, and the problems of difficulty in cleaning the garbage can and poor environment in the garbage can and the surroundings are solved.