Double-layer negative pressure cupping

The utility model discloses a negative pressure cupping and a pasted film. The negative pressure cupping and the pasted film are connected in sealing mode, the pasted film is provided with an elastic film and an adhesive sticker layer, wherein the upper surface of the elastic film is over against the negative pressure cupping, and the adhesive sticker layer is arranged on the lower surface of the elastic film and corresponds to the edge position outside the outer edge of the cupping. When a cupping body of the negative pressure cupping is in a negative pressure state, the elastic film expands synchronously to the cupping body under the function of a negative pressure. A drainage pipe is arranged besides the elastic film, a drainage bag can be externally connected, so that secreta are convenient to drain. The pasted film and the cupping are combined and adopted so as to form the negative pressure on the surface of a wound, quicken blood circulation of a part of the surface of the wound, obviously promote new v