The modern view has divided traditional hemangiomas into: true hemangiomas and vascular malformations. True hemangiomas are: hemangioendothelioma and capillary hemangioma. They are characterized by bright red or dark red skin or subcutaneous swellings that appear after birth or shortly after birth and grow rapidly in a short period of time, increasing to several times or tens of times, and then appearing to be quiescent after a certain age, after which some of the tumors shrink or recede, i.e., the so-called proliferative, quiescent, and receding phases. It is more common in infants within the first few months of life. The tumors are divided into receding and non-receding hemangiomas. Hemangiomas of the extremities and trunk are easily receding, while those of the face are difficult to recede. Vascular malformations are divided into: arteriovenous malformations, venous malformations, capillary malformations, and arteriovenous fistula malformations. They are characterized by the appearance of skin or subcutaneous swellings with color changes after birth, do not increase rapidly, grow slowly with age, do not shrink or recede on their own, and invade a wide range of areas. Treatment of true hemangioma: Principle: The effect of treatment should be better than the effect of natural regression. Before treatment, make an expected judgment on whether the tumor can naturally subside or what will happen after subside. Treatment methods: 1. Sclerotherapy: Nowadays, most of the drugs such as pinyamycin, hormone and urea are used, which are diluted in a certain proportion and then injected directly into the tumor. It is suitable for small tumor body (3cm), light skin color change, end of limbs, mouth, nose and eyes, and other parts that are not easy to operate. Complications: tumor ulceration, bleeding, infection, hypothermia, leukopenia, etc. 2.Surgery: It is suitable for cases where the growth of tumor is limited, the postoperative wound can be easily repaired, and the scar left behind has little local impact. 3.Hormone therapy: Glucocorticoid has therapeutic effect on most of the tumors, which can make the tumor shrink, lighten the color and reduce the blood flow. There are two methods: oral and intravenous. Complications: The tumor is easy to recur after stopping the drug, and the symptoms of cortisolism can easily appear, and it is difficult to eliminate the tumor completely. 4.Laser treatment: YAG laser, CO2 pulse laser, dye laser, etc. can treat hemangioma, but the selected cases are different. Disadvantage: It has no therapeutic effect on subcutaneous hemangioma.