It depends on the parts. Generally, the body is slightly deformed, and the stiffness of the body has not changed after the repair of sheet metal shaping and painting. However, if the key parts, especially the automobile longitudinal beam, ABC column and some side beams with high technical requirements are deformed, it is very difficult to form, and it may be necessary to resort to heat treatment and gas cutting. However, after these procedures, metal parts will change their original properties, lose stress and strength, and are easy to corrode and rot. If it is some auxiliary parts, such as some nonmetallic materials or headlights, it will not affect the quality of the whole vehicle after repair.