Portable negative pressure adjustable negative pressure scraping therapy device

The utility model relates to a portable negative pressure adjustable negative pressure scraping therapy device which comprises a sleeve and a piston in the sleeve, the sleeve is of a double-layer structure, one end of the outer layer of the sleeve is a hard arc-shaped elbow, and the end, used for being attached to the skin, of the arc-shaped elbow is in a flat ring shape; the sleeve inner layer is of a straight cylindrical structure which is uniform in the length direction, one end of the sleeve inner layer is connected with one end of the sleeve outer layer in a sealed mode through a bent plastic pipe, and the other end of the sleeve inner layer is fixed to the other end of the sleeve outer layer in a sealed mode; the piston is arranged in the inner layer of the sleeve and tightly attached to the inner wall of the sleeve, a piston rod is fixed to the rear portion of the piston, a buckle is arranged on the piston rod in the length direction, and a bayonet is formed in the sleeve. The utility model has the ben