Nowadays, scar repair technology has been very mature, and there are many ways to treat scarring. Choosing the right scar treatment for you can lighten the scar or even eliminate the scar in the budding stage. I. Prevention of scar: 1. multi-layer suture of wound, no dead cavity, no tension, using cosmetic sutures; 2. topical application of Barker or scar post 3 -6 days after wound removal, twice a day; 3. 30 days after wound removal, treatment with Paroma 1540 laser, once a month, 5-6 times a course, to stop overgrowth of scar; 4. main treatment measures for overgrowth of scar are surgical excision with long-acting hormone local injections, radiotherapy, KL type CO2 laser treatment. There are many methods of scar repair, and the common ones are as follows: 1. grinding surgery including traditional grinding and microdermabrasion, which simply means smoothing out the uneven scars and letting the local area grow back into a more uniform epidermis. This procedure is suitable for tiny scars with multiple depressions, while the general coarse raised scars that are treated with grinding surgery will still be scar tissue and will not improve the problem. 2.Radiation therapy Superficial X-ray irradiation or isotope patching can be used. It is effective for the emergence of scars and bumps. 3.Dermal soft tissue expansion is suitable for large scars, because they cannot be directly sutured after excision and must be covered by borrowing nearby or distant tissues. This method is very effective for eliminating large scars or scars with functional impairment. 4.Keloid scar softening needle It is suitable for small and medium-sized hyperplastic scars and post-surgical strip hyperplasia. 5.Local medication patch The use of scar softening cream, scar enemy and other patching can promote scar softening and absorption.