The invention provides a novel absorber capable of effectively avoiding eccentric abrasion of a connecting rod. The novel absorber solves the problem that when an existing absorber is used, the connecting rod is prone to eccentric abrasion. The novel absorber comprises the connecting rod, a guider and a recovery buffering block, wherein the connecting rod penetrates through an inner cylinder barrel of the absorber. At least two threads with semi-circular cross sections are machined on the surface of the connecting rod from the lower end to the upper portion. The inner cylinder barrel is composed of an upper inner cylinder barrel body and a lower cylinder barrel body which are connected through a circular nut. A thread of the circular nut is matched with the threads on the connecting rod. The two end faces of the circular nut are each provided with a groove, wherein the depth of each groove is 3 mm, the width of each groove is equal to the thickness of the inner cylinder barrel wall, and the grooves can be matched with the inner cylinder barrel and can keep sealing. According to the novel absorber, the eccentric abrasion of the connecting rod is effectively prevented, abrasion to the connecting rod is relieved, and therefore the service life of the absorber is prolonged.