Scar pimples are very common in clinic, which are mainly manifested in the presence of hyperplastic plaques of different sizes, protruding skin, red to skin color, or even light white in the chest, shoulder and back. In addition to the ugly appearance, there will be pain or itching on cloudy days or when it rains, which seriously affects people's quality of life. There is a strong clinical demand for treatment, and there are many treatment methods. The most common ones are: first, drug injection, such as glucocorticoids, such as triamcinolone acetonide, diprospan (compound betamethasone injection), and anti-tumor, such as 5-fluorouracil injection. After injection treatment, the skin lesions become smaller and flatter to achieve the therapeutic purpose. Second, freezing. When freezing, simple treatment is prone to ulcers, and even very easy to recur. Therefore, when freezing treatment is used, it is mostly used for very obvious hyperplasia and very hard skin lesions, and drugs can not be injected into them. The method of freezing is used to soften the tissue. At this time, it is better to cooperate with the method of injection and sealing. Third, surgery is to remove skin lesions, but simple surgery is very easy to recur, which needs to be accompanied by radiotherapy. Fourth, radiotherapy, followed by surgery, to inhibit the re proliferation of scars as far as possible. Of course, for the treatment of scars, a single method is generally ineffective, and the combination treatment method is often used. Only in this way can better results be achieved.