Steel tube shrinking machine is a hydraulic automatic pipe end processing machine controlled by touch screen integrated control. Replacing the mould can process and shape pipe ends such as pipe expanding, pipe shrinking, bulging and upsetting ribs. It can freely decide to use manual, point-operated or self-operated according to user's needs. The dynamic processing machine tool consists of oil tank, bed, slider, main oil cylinder, die core rod (selection), Limited oil cylinder, compression oil cylinder, clamping die, axial positioning oil cylinder, axial positioning angle iron and other main parts.