The invention relates to a track simulated impact sled and specifically relates to a sunken weight integral lifting gravity center adjustable track impact sled. The track impact sled comprises an impact sled force-transforming coupler assembly, wheelsets, lifting screw and counter force pillar assemblies, a sunken four-axis uniform distribution impact sled connection base frame, a weight-containedhanging basket type lifting sub-frame, an impact wall and connection frame assembly and a tested coupler assembly. According to the track impact sled, through adoption of a structure with a main frame and the sub-frame, weights are distributed on the sub-frame and can be integrally lifted; and through adjustment of a height of a weight integral lifting platform and distribution of weight blocks,movement of a train gravity center in three directions: an up and down direction, a front and rear direction and a left and right direction, is simulated in an actual situation, wherein the movement results from nonuniform distribution of personnel seats, luggage and the like. According to the track impact sled, deformation and damage situations of vehicle structures and energy absorption elementsand components after a bullet train is impacted under high speed driving can be simulated, so impact resistance of the vehicle is evaluated, and the track impact sled has important significance in research of train vehicle safety.