The utility model relates to a differential telescopic leg massager.Including base,Leg massage components and foot massage components,There are two sliding differential elements on the base.The differential element consists of two parallel racks and a cylindrical gear.One rack is fixed on the base.Another rack is fixed to the foot massage assembly.The leg massage assembly is fixed on the cylindrical gear.Then,The foot massage component moves relative to the base.Through the cylindrical gear, the leg massage component is driven to do the same direction movement relative to the half speed of the foot massage component.一種差動伸縮式腿部按摩器，包含基座、腿部按摩組件和足部按摩組件，基座上設有左右兩個可滑動的差動元件，差動元件包含兩條平行齒條和一個圓柱齒輪組成的搓動機構，其中一根齒條固定於基座上，另一根齒條固定於足部按摩組件，腿部按摩組件固定於圓柱齒輪上，進而，足部按摩組件相對於基座運動，通過圓柱齒輪帶動腿部按摩組件做相對於足部按摩組件二分之一速度的同向運動。
