Any minor trauma to the skin of a scarred person can predispose the scarred person to the formation of scars. There is no single method that can eliminate scars in a scarred person. It can only be combined with the severity of the scars, through the application of drugs or other methods, can lighten the scars, to prevent the proliferation. 1. Topical medication: Superficial scars can be lightened by applying scar removal medication such as sodium heparin sodium allantoin. 2. Local injection of drugs: local injection of glucocorticoid drugs such as Triamcinolone acetonide can inhibit scar proliferation and relieve local discomfort. 3. Physical therapy: Early formation of scars can be treated by X-ray radiation therapy, if necessary, can also be combined with the skin condition through laser therapy. If the scar has already caused local dysfunction, it can be treated by surgical excision or skin grafting. People with scars who want to eliminate scars should go to the hospital in a timely manner, under the guidance of the doctor to standardize the treatment, avoid self-medication.