What is hemangioma? Hemangioma is a common disease in dermatology clinics, with an incidence rate of 3‰ to 1%. Most of them occur in infants and young children at birth or shortly after birth. They are mainly found on the head and face, but also on the oral mucosa, around the eyes, extremities, trunk, and even internal organs such as liver, kidney, and bones. The cause of hemangioma is still unclear, but it is generally believed that genetic factors are the main cause, i.e., genetic mutation during the formation of blood vessels in embryo, so it is also called congenital hemangioma. In the past, people classified hemangiomas according to their clinical characteristics, and they were divided into bright red nevus, strawberry-shaped, spongy, trapezius, mixed hemangioma, etc. Why must hemangioma be treated? The natural course of hemangioma can be divided into the proliferative, stable and receding stages. However, not all hemangiomas, such as vascular malformations, can completely subside naturally, and some of them may become more and more serious; moreover, the natural subside of hemangioma is a very slow and long process, and individual children may need 5~8 years or even longer. Especially for exposed areas such as scalp, face, neck and arms, hemangiomas increase rapidly in the early stage and do not recede for a long time afterwards, which is bound to bring great harm to the physical and mental health of children and their families. Therefore, early and active treatment to stop the growth of hemangioma can significantly improve the local skin appearance and help to prevent scarring and even disfigurement. What are the treatment methods for hemangioma? There are various treatment methods for skin hemangioma, including surgical excision, cryotherapy, injection of sclerotherapy, radiation therapy and laser therapy. Each method has its own advantages and disadvantages. Clinically, the appropriate treatment method is usually chosen according to the classification, location, size and depth of the hemangioma. The latest introduction of Nd:YAG fiber laser and ultra-pulse CO2 laser can treat strawberry, spongy and some mixed types of hemangioma with minimally invasive mediated technology, which has short operation time, almost painless for patients, fast recovery after operation, no recurrence after healing, small side effects, relatively low treatment cost, excellent treatment effect, and almost no adverse effects on children, which most parents are happy to accept.