Scars on the legs, which are clinically known as keloid scars, can be improved by medication, surgery and laser. 1. Medication: If it is a newborn scar, it can be treated with drugs to inhibit scar proliferation under doctor’s guidance, such as silicone gel, polysulfonic acid mucopolysaccharide cream, allantoin gel, etc. If it is an old scar, it can be softened by local injection of steroid hormone to soften the scar. If the scar is old, it can be softened and atrophied by local injection of steroid hormone. 2. Surgery: If the scar is obvious or leads to dysfunction, it can be improved by scar reshaping surgery, skin grafting, soft tissue filling surgery and so on. 3. Laser treatment: Fractional laser and erbium laser can be used for treatment, which is less traumatic and quicker recovery, but usually requires several treatments to have significant improvement. It is recommended that patients with scar treatment hospitals go to a regular medical institution, and ask the specialist to choose the appropriate program after an interview.