Scar refers to keloid scar in medicine. Thyroid surgery scar includes superficial scar, atrophic scar, hyperplastic scar, etc. Its removal methods include medication, hyaluronic acid filler, photoelectricity treatment and so on. 1. Drug treatment: superficial scar caused by thyroid surgery can be lightened and eliminated by applying drugs such as sodium heparin sodium allantoin gel and silicone gel. 2. Hyaluronic acid filler: If the scar from thyroid surgery is atrophic, hyaluronic acid filler can be used to fill the depressed area, which can smooth out the scar. 3. Photoelectricity treatment: If the thyroid surgery scar is hyperplastic scar, photoelectricity treatment is recommended, such as carbon dioxide laser, erbium laser, etc., which can repair the damaged tissues of the skin and improve the appearance of the scar. There are many ways to remove thyroid surgery scars, so it is recommended to go to regular hospitals and cooperate with doctors for standardized treatment.