A 1cm scar can be treated with excision and suture surgery, provided that it is non-keloid and the location of the scar is suitable for surgical excision. 1cm scar is a smaller scar in terms of surgery, the entire scar can be surgically excised and directly plasticized and sutured after the reduction of tension; after removing the stitches, the use of drugs to inhibit keloid proliferation as early as possible, to reduce the re-generation of keloid scars. After keloidectomy, it is necessary to change the medication regularly, keep the local area clean and dry, and avoid external bumping or extrusion of the surgical area, so as to promote the early healing of the surgical incision. Keloid, or keloid located around the eyes, mouth and other special locations, the operation is easy to affect the appearance and function of the person, is not suitable for direct excision suture. You can try to do isotope therapy or glucocorticoid closure therapy, can also be used externally with compound heparin sodium allantoin gel and other drugs to improve. Scar surgery needs to be evaluated and operated by professional doctors in regular medical institutions.