One orbit shock absorber used in the orbit of subway and light rail traffic consists of fastener and shock absorption cushion. Shock absorption cushion is the oval toper rubber ring between the rail-bearing board and base, which is vulcanized into a whole; fastener is elastic one specifically used for ground railway. The orbit shock absorber has good elasticity and good shock absorption effect, can lighten rail's abrasion resulting from wheel, is easy to construct, maintain and change gauge, has long performance life, has higher cost performance than the similar products. It plays roles including mainly insulation of shock, protection of ground building, reduction of surrounding environmental noise