Scarring, or keloid, is the clinical term for scarring. After surgery, scar proliferation can be prevented by daily protection and medication. 1. Daily protection: Keloid patients should avoid wound infection after surgery, keep the wound area dry and clean; at the same time, reduce the secondary injury of the wound, and avoid squeezing the wound when bandaging the affected area, so as to provide a good healing environment for the wound. 2. Medication: Keloid patients can use drugs to inhibit keloid proliferation after the incision is completely healed, such as cumulonimbus cream ointment, silicone gel, silicone gel dressing, and so on. After the proliferative scar is stabilized, local injection of scar softening drugs, such as trimethoprim and other glucocorticoid drugs can also be used. All of the above medications should be used under the guidance of a specialist, avoid self-medication. Keloid patients who have itching symptoms after surgery must avoid scratching, which may cause wound ulceration and stimulate keloid proliferation again.