Fractional laser technology is currently the most talked about new medical aesthetic technology in the global skin and plastic surgery community, and is a minimally invasive treatment between invasive and non-invasive. It has the advantages of non-invasive treatment with little side effects and short recovery time, combining the advantages of both into one. I. Working principle Fractional laser treatment is to use laser to make microscopic holes on the skin evenly, and then cause a series of skin biochemical reactions to achieve the effect of skin tightening, skin rejuvenation and pigmentation removal. Second, the scope of treatment 1, remove acne and scars, especially for acne scars, trauma scars, surgical scars, frostbite scars; 2, remove wrinkles: hands, neck, facial wrinkles (especially for perioral and orbital wrinkles), reduce deep headlines, stretch marks, skin laxity; 3, treat superficial skin pigmentation diseases such as freckles, coffee spots, age spots and other pigmentation diseases, improve chloasma; 4, improve Photoaging skin and pore enlargement phenomenon, thicken the dermis layer. The advantages of fractional laser 1.It has the double effect of immediate cavitation and skin tightening and long-term stimulation of collagen growth, and plays a rejuvenating effect; 2.It completely achieves the effect of traditional peeling treatment; 3.It greatly shortens the recovery time after treatment: within 8 hours, the epidermis will be completely healed, and you can wash your face and take a bath, and in about 4-5 days, the scabs at the small white spots fall off and the skin returns to normal appearance. And the internal collagen regeneration can take up to 6 months or even 6 years.