Torsion beam structure

The utility model provides a torsion beam structure. The torsion beam structure is characterized by comprising a pair of suspension frame trailing arms and a transverse beam, wherein the suspension frame trailing arms are arranged in a left-and-right mode, and the transverse beam is connected between the pair of suspension frame trailing arms. When the transverse beam is divided into a plurality of sections, the cross sections of the sections are different in shape. According to the torsion beam structure, stress on a transverse beam body and stress on welding joints at two ends of the transverse beam are effectively reduced, and steering stability of a vehicle is improved.