The new type of hydraulic puller is convenient to operate. The three-jaw and two-jaw types can be replaced according to the needs of on-site work. It can rotate freely. According to the distance from the center point of the piston of the puller, it can quickly reach the center point of the workpiece to be pulled. Any pump can be optionally selected. The claws are equipped with three claws, and the height can be adjusted arbitrarily.