Scarring refers to keloid scars, and isotope therapy for keloid scars is a form of radiation therapy that utilizes rays to achieve results in treating keloid scars. Isotope therapy uses radionuclides to release rays to kill diseased tissues as well as cells, stimulate collagen within the skin layer, rejuvenate collagen, and cause local cells to divide and differentiate, thus achieving the goal of treating keloid scars. Isotope therapy is only suitable for small keloids, larger keloids are still recommended to take surgical treatment first, such as excision, flap transplantation, etc., and then combined with isotope therapy, which can reduce the recurrence rate. If the patient has keloids, it is recommended to go to the hospital in time and standardize the treatment under the guidance of the doctor.