Garbage can facilitating garbage bag tidying and garbage dumping

The utility model discloses a garbage can facilitating garbage bag tidying and garbage dumping. The garbage can comprises a garbage can body, the garbage can body comprises a top-layer can body, a middle-layer can body and a bottom-layer can body, the radial sizes of the top-layer can body, the middle-layer can body and the bottom-layer can body are kept unchanged from top to bottom, and the top-layer can body is connected to the outer side wall of the middle-layer can body in a sliding mode. According to the utility model, the garbage can body is unfolded; the volume of the garbage can body is stretched and expanded; the garbage bag is unfolded under the action of air pressure; manual spreading without manual work, therefore, a large amount of time is saved; when the garbage bag is filledwith garbage, the pressing ring is taken down firstly, the bag opening of the garbage bag is sealed, then the garbage can body is folded in advance, then the garbage bag can be taken out of the garbage can body conveniently,