The new laser currently applied has the advantages of high safety, less trauma, less bleeding and less pain, but the normal structure of the skin will be damaged to varying degrees during the treatment process, and the skin may show varying degrees of redness and swelling, and even blood oozing, infection, pigmentation and scarring after the laser procedure. Therefore, it is necessary to strengthen skin care after laser treatment under the guidance of professional dermatologists. 1, wet compress Immediately after laser surgery, cold wet compress or wet compress mask on the skin, do not rub the skin in the process. If the erythema, swelling, bleeding is obvious, use 3% boric acid solution wet compress. 2.Use certain medications After surgery, thin external application such as gentamicin injection or erythromycin ointment can be used on the trauma. If the laser treatment area is large and the inflammatory reaction is heavy, oral prednisone 10 mg can be taken 3 times a day for 3 days to strengthen the anti-inflammatory effect; alkaline fibroblast growth factor (BFGF) can be sprayed on the trauma to promote healing. 3.Use of medical skin care products As laser surgery damages skin structures such as sebaceous membrane, stratum corneum, brick wall structure and water channel protein to varying degrees, skin regeneration and repair should be promoted. Within 3-6 months after treatment, use suitable medical skin care products for effective skin care (moisturizing, sun protection, reducing inflammation) to repair damaged skin. 4, sunscreen To avoid postoperative hyperpigmentation, sunscreen should be used after surgery: ① External sunscreen The sunscreen chosen after laser surgery: UVB sun protection index (SPF) > 30; UVA protection factor (PA) >++. ② Wear sun hat, cotton long-sleeved tops and long pants, sunshade, preferably UVB umbrella, etc. when going out; ③ Avoid prolonged exposure to sunlight during the most intense time of the day, from 10:00 am to 4:00 pm. 5, diet after laser surgery should avoid eating food containing copper, B vitamins, less spicy food. Instead, you should eat more foods rich in vitamin C, vitamin A, such as: more fruits, vegetables, and foods containing iron, zinc and other trace elements such as lean meat, fish, beans, cabbage, radish, etc., and pay attention to drinking more water to enhance the repair of the skin.