Negative pressure bag-attaching garbage can

The utility model discloses a negative pressure bag-attaching garbage can. The garbage can comprises an inner can body, an outer can body and an air sucking device. The outer can body is of a tube body structure, and a multi-hole support is arranged on the lower portion of the outer can body. A cover ring is arranged on the outer wall of the top end of the inner can body, the inner can body is of a net-shaped or multi-hole can body structure, and the bottom of the inner can body is attached to the multi-hole support. The air sucking device comprises an outer cover, an elastic piece, a pedal, a pull rope, a floating plate, an exhaust hole and an exhaust cover. The outer cover is of a tubular structure, the top end of the outer cover is connected with the bottom of the outer can body through threads, a notch is formed in the outer cover, a fulcrum frame is arranged at the position, opposite to the notch, of the inner wall of the outer cover, one end of the pedal extends out of the notch, and the other end of the pedal is connected with the fulcrum frame. The elastic piece is arranged on the upper portion of the outer cover, the periphery of the elastic piece is completely attached to the inner wall of the outer cover, one end of the pull rope is connected with the elastic piece, and the other end of the pull rope is bound to the pedal. The exhaust hole is formed in the part, between the multi-hole support and the elastic piece, of the wall of the outer cover, and the exhaust cover is arranged on one side of the exhaust hole. The floating plate is arranged between the elastic piece and the multi-hole support. The negative pressure bag-attaching garbage can is easy and convenient to operate and can make a garbage bag be attached to the inner can body rapidly.