The treatment of birthmarks in children depends on the different types of birthmarks. Some birthmarks can fade away on their own, at which time no special treatment needs to be given. However, there are some birthmarks that not only affect the appearance, but also have the tendency of increasing, breaking, bleeding and even malignant, in which case they need to be treated in time. Commonly, there are medication, surgery and physical therapy, etc. 1, medication: mainly for red birthmarks caused by hemangioma or vascular malformation, the first choice of drugs is propranolol, which is used for high-risk hemangioma. The second is hormone drugs, which can promote the shrinkage of hemangioma, often choose is prednisone. Meanwhile, sclerosing agent can be chosen, which is suitable for relatively small capillary hemangioma or cavernous hemangioma, and commonly used sclerosing agents are polycinnamon and sodium cod liver oil acid injection; 2. Surgery: it is mainly suitable for birthmarks with malignant tendency, such as those that are constantly enlarging, broken and bleeding, and this situation is usually treated with surgery. Surgical methods include excision of skin lesions, suture, skin grafting, etc., but the surgery may have leftover scar; 3, physical therapy: physical therapy can be used for red birthmarks caused by hemangiomas, but also can be used for blue or blue birthmarks formed by pigmentation, commonly used laser therapy, including ruby laser, emerald green gemstone laser, generally can achieve a better cosmetic effect after treatment. However, after laser treatment, you should pay attention to sun protection, and regular follow-up. In addition, there is liquid nitrogen freezing method to treat birthmarks, the doctor will be based on the size and shape of the skin lesions to liquid nitrogen freezing, but liquid nitrogen freezing is easy to leave a scar; 4, other treatments: for the color of the birthmarks of light, small range, can be applied to the chemical peeling or skin abrasion and other methods, but also be able to achieve better results.