Scars, i.e. keloid scars, cannot be completely eliminated once they appear, but they can be improved through medication, physical therapy and surgery. 1. Physical therapy: In the clinical treatment of keloid scars, physical methods include laser therapy and radiation therapy. Commonly, there are carbon dioxide laser, erbium laser, dye laser, etc. Radiation therapy is generally used for special parts of keloid hyperplasia or keloidectomy. 2. Medication: Anti-keloid drugs such as silicone gel and allantoin gel can be used as prescribed by the doctor. For old raised keloid scar, local injection of glucocorticosteroids such as trimethoprim or scar softening drugs such as 5-fluorouracil can make the scar tissue softer and thinner. 3. Surgery: For patients who are not effective in physical and medication treatment, surgery can be used as prescribed by the doctor, such as keloidectomy with direct suture, keloidectomy with Z-plasty, etc. Patients who are willing to undergo this treatment are recommended to go to a doctor for treatment. It is recommended that patients who are willing to be treated should go to a regular medical institution, choose the appropriate treatment method under the guidance of a specialist, and carry out professional treatment to avoid the adverse consequences of improper treatment.