Stretch marks are a kind of swelling lines, a skin change that occurs during pregnancy, mainly on the abdomen, but also on the chest, back, buttocks and limbs, fading methods are medication and physical therapy such as fractional laser, ultrasound, etc. The first, drug treatment: 1, anti-stretch mark cream: anti-stretch mark cream contains hydroxyproline complex, rosehip oil, Centella asiatica and vitamin E, etc., after bathing and before bedtime applied to the stretch marks, may have a certain effect of lightening stretch marks; 2, retinoic acid drugs: common tazarotene, adapalene, etc.. The company has been able to induce epidermal proliferation, stimulate skin extracellular matrix protein synthesis, accelerate the formation of new connective tissue in the upper dermis, and also has a certain anti-inflammatory effect, for stretch marks may have a certain lightening effect. The physical treatment: 1, fractional laser: through focal photothermal effect induced healing reaction of the dermis, so that the dermis collagen fibers and elastic fibers proliferation and rearrangement, collagen orderly deposition, increase the thickness and density of the dermis, improve skin elasticity, and then lighten the stretch marks; 2, ultrasound: ultrasound is a mechanical wave, can produce energy to penetrate the epidermis, to reach the site of fiber damage, so that the lesion The temperature of the damaged area will rise after absorbing energy, which will repair the elastic fibers and collagen fibers in the dermis, thus lightening the stretch marks; 3, micro-needle treatment: the radio frequency function of micro-needle can stimulate the skin to produce a large number of tiny pipes on the surface of the skin, and the active substances will penetrate into the skin through the pipes, which has a repair effect and can lighten the stretch marks and make the local skin tighter.