A shock absorber rear support comprises an upper support and a lower support arranged in parallel with each other, the lower surface of the upper support is provided with an annular groove, the lowerpart of the annular groove is provided with a support plate, An upper surface of the support plate is provided with an annular boss which cooperates with the annular groove, a gap is left between theannular groove and the annular boss, the edge of the upper support and the edge of the support plate are connected through a nested shell, an elastic body is arranged in the gap, two sides of the support plate are provided with a pair of air cylinders arranged horizontally, the air cylinders are internally provided with pistons, and the pistons are connected with the inner walls of the nested shell; The shock absorber is arranged between the support plate and the lower support. The vertical force is decomposed into the resultant force of the vertical force and the horizontal force to reduce the magnitude of the vertical force, and at the same time, a pair of horizontally arranged cylinders are arranged on both sides of the support plate for relieving the horizontal component force generated by the vertical force of the spring; So that the shock absorber rear support can bear greater vertical force, and the shock resistance of the shock absorber support is improved.