Theoretically, if the injury is serious and the main girder is seriously deformed, even after repair, the stiffness in the collision is not as good as before; In addition, the accuracy of the framework may also be affected during the intense operation. If the injury is not serious, but only slightly deformed, the impact will not be too great. Yes, it can be repaired, which is the traditional girder correction work. Restoring the original position of the beam after dislocation is called rectification. However, the strength of the reformed girder is definitely not as good as that of the original factory. The appearance of the car can almost be restored to its original appearance, but I think it is no problem to restore the interior to more than 80%. It is absolutely no problem to exercise safety, and the service life may not be greatly reduced. Your worry is entirely due to your ignorance of cars. Influence of repairing the longitudinal beam: 1. As long as the car is driving forward impartially, the steering wheel does not shake at high speed and the tires do not wear, there will be no problem; 2. If there are the above problems, check whether it can be adjusted. If it cannot be adjusted, replace the girder; 3. The automobile girder is a kind of automobile chassis structure, but now the automobile basically does not adopt the girder chassis design, only trucks and buses will adopt it.