Abstract: A inverted type shock absorber, comprising: an outer cylinder; a damping cylinder including a cylinder body and a piston rod, wherein the cylinder body is coaxially sleeved within the outer cylinder; at least three bearings which are fixed at different upper-lower positions of an internal surface of the outer cylinder to support the external surface of the cylinder body such that the cylinder body is slidable against the outer cylinder along the expanding-compressing direction; and an rubber stabilizer which tightly surround the external surface of the cylinder body in such a manner that the rubber stabilizer is sandwiched between two of said at least three bearings such that the rubber stabilizer provides the cylinder body a stabilizing force which radially retains the cylinder body relative to the outer cylinder to stabilize the sliding between the outer cylinder and the cylinder body.