Abstract: Aiming at the problems such as large curvature and deflection of rail waist after cooling caused by the extremely asymmetric section characteristics of 60R2 grooved rail, such as heavy head, light foot and thin waist(the metal content of rail head is 1.8 times of the rail bottom), the technical requirements and production control difficulties are analyzed, and the straightness control technologies, including workpiece inversion, pre-bending process, straightening roller design and straightening reduction design, are studied and tested in production. The results show that the average horizontal flatness of 134 rail ends measured randomly is 0.11 mm, the standard deviation is 0.08 mm, and the maximum value is 0.36 mm by adopting technical schemes such as large deformation subsection non-uniform pre-bending and roller profile design of horizontal straightening roller on short arm. The average straightness in the vertical direction is 0.16 mm, the standard deviation is 0.09 mm, and the maximum value is 0.45 mm, all of which meet the standard requirement of not more than 0.8 mm.