A patient, who has large scars on the body, but does not affect any physiological function, generally speaking, the indications for dilator treatment should be strictly selected for these areas. 1.The patient’s scars do not affect the function. 2.The patient’s scar has been stabilized and the color problem is serious. 3. The patient wants non-surgical treatment with a short recovery period and easy care. The introduction of PLASMA plasma beam treatment, which is a more advanced instrument with definite efficacy in scar treatment, improves the gray color or flatness of old scars with more obvious effect. It usually requires more than 4-5 treatments. The patient was very satisfied after coming for follow-up today, “I was surprised to see such a big improvement in one treatment”, and other areas will be treated one after another. Before treatment, half a month after the first treatment (subsequent courses of treatment will be presented one by one) Post-treatment precautions 1, treatment immediately apply erythromycin ointment. 2.Epidermal growth factor can be used to promote the rapid repair of the wound. 3. Do not touch water until the treatment area has recovered (about 5 days). 4.Pay attention to sun protection.