Stretch marks can usually be repaired and can be treated with laser or radiofrequency. You also need to take precautions to prevent stretch marks. Stretch marks are mainly caused by the destruction of collagen and elastin fibers due to excessive stretching of the skin, and usually do not affect the health of the body, but if you feel that it affects the aesthetics, you can go to the hospital to take a laser or radiofrequency and other ways to repair. Laser therapy can produce high heat energy in an instant, destroying the blood vessels of stretch marks, and can stimulate subcutaneous collagen proliferation, so as to remove stretch marks. Radiofrequency therapy uses electromagnetic waves released by radiofrequency therapists to act on the dermis and generate a large amount of heat energy, which causes thermal denaturation of dermal collagen fibers, thus proliferating and remodeling to remove stretch marks. However, these methods can only make stretch marks fade, not completely disappear. Take precautions in your daily life and try to avoid excessive weight gain during pregnancy.