The impact of vehicle front side rail correction on the vehicle is as follows: 1. The front side rail may not be familiar to many car buyers. The front longitudinal beam is equivalent to the skeleton of the vehicle and consists of two longitudinal beams located on both sides. Most of the longitudinal beams are stamped from low alloy steel plates, and the cross section is trough-shaped or I-shaped. The front of the vehicle side rail belongs to the energy absorption area. Once it collides, it will collapse, and it is easy to see even after repair. So checking the front side rail is checking the accident. 2. Although many vehicles are equipped with front and rear anti-collision beams, in the event of a frontal collision, most of the two front longitudinal beams covered by the engine really play a role. In collision accidents, the front and rear longitudinal beams are mainly responsible for energy absorption, and the longitudinal beams absorb collision energy through crushing deformation and bending deformation. Among them, the front longitudinal beam bears about 60% of the total collision energy; 3. Although the energy absorption pressure of the rear longitudinal beam is smaller than that of the front longitudinal beam, it is still the main force to absorb energy in the rear-end collision. The design idea of longitudinal beam members is to squeeze deformation along the axial direction as much as possible and control bending deformation to obtain satisfactory energy absorption effect.