The principles of treatment are: ① prevention or treatment of related complications that seriously endanger life or function; (2) to prevent the deformity or facial defect caused by the regression of hemangioma; ③ Prevent ulcer and infection, promote ulcer healing, reduce scar formation and relieve pain for ulcer patients; ④ Relieve the psychological pressure of children and their families; ⑤ Avoid over-treatment for lesions that can spontaneously subside and have a good prognosis.