Old scars, i.e. obsolete scars, can be helped to fade away by medication, laser treatment and surgery. 1. Medication: Under the advice and guidance of doctors, you can choose topical application such as cumquat cream ointment and silicone gel, or intravenous injection of glucocorticosteroid medication such as triamcinolone acetonide and betamethasone injection, which can effectively promote the fading of the scar and restore the smoothness of the skin. 2. Laser treatment: If the medicine can not be effectively improved, you can choose a regular dermatology or plastic surgery hospital, through the laser to remove scars, such as fractional laser, etc. During the treatment, pay attention to the nutritional diet, avoid spicy, greasy, stimulating food. 3. Surgery: If the area of the scar is large and the situation is special, according to your own situation, combined with the doctor’s opinion, the scar will be treated by surgical excision, and you should pay attention to the combination of superficial radiation therapy to prevent recurrence after the surgery. If the old scar does not subside effectively, affecting normal aesthetics, it is necessary to go to the hospital in time for examination, according to the specific situation. Symptomatic treatment, do not unauthorized treatment.