Hemangioma is one of the common benign skin tumors. It is caused by malformation of vascular tissue or expansion of existing blood vessels during fetal life and is clinically classified into 4 types: 1. It can exist at birth. They are mostly unilateral and appear as small red spots to large red patches, not higher than the skin surface, light red or dark red in color, irregular in shape, and partially or completely discolored by pressure. 2.Strawberry hemangioma: also known as capillary hemangioma or simple hemangioma, appears a few weeks after birth and grows up within a few months, usually on the head and neck. The lesions are bright red or purplish red, higher than the skin surface, with clear boundaries and soft lobulated tumors. It gradually increases in size and grows to the maximum within one year of age, and then gradually fades away. 75-95% of patients can completely or partially fade away at the age of 5-7 years. 3.Cavernous hemangioma: It is a large, irregular, soft subcutaneous mass, round or irregular in shape, which may be higher than the skin surface, nodular or lobulated, with less clear boundary, and may occur in various parts of the body. 4.Mixed hemangioma: that is, the above two kinds of hemangiomas occur in the same part of the body at the same time. Hazards: It mainly affects the beauty. If the hemangioma grows in special parts such as eyes, ears, mouth, intestines, etc., it may lead to the development or function of the organs in those parts being affected. Treatment: It depends on the shape and location of the hemangioma. For example, topical corticosteroids, corticosteroids, anaphylaxis, etc. can be used for nevus; local closure, freezing, laser, IPL, laser photodynamic, superficial X-ray irradiation, etc. can be used for strawberry hemangioma; local closure and surgery can be used for cavernous hemangioma. Oral glucocorticosteroids and insulin can also be treated, but the efficiency is high and the cure rate is lower than that of injection therapy, and the side effects are more difficult to control. It should be emphasized that surgical treatment is mainly for lesions with large arterial branches and arteriovenous fistulas, and interventional treatment can be used before, and surgery can be chosen after poor results. Interventional treatment can also be chosen first for angiomas with high pressure. The treatment with isotope dressing is incomplete and may lead to radiation dermatitis, permanent pigmentation or hypopigmentation, sometimes resembling vitiligo; freezing and laser are painful and incomplete, also leaving scarring and pigmentation abnormalities; surgical treatment can remove most of the tumor, but it is traumatic and leaves large scars, most of which recur later and affect subsequent treatment.