The scars are a very common proliferative skin disease that is related to the patient’s physique. For scar removal, the following methods are mainly used clinically: 1. Under the condition of extreme low temperature, the scar tissue will shrink locally and effectively kill the scar proliferation cells, thus healing the scar. 3. Laser treatment can be used. The local photoelectric thermal effect of laser is used to damage the scar proliferating cells, thus playing a certain healing effect. 4. 5-Fluorouracil with local injection of lidocaine is used as standard treatment under the guidance of clinicians to prevent causing local skin atrophy.