1.Strawberry hemangioma: Strawberry hemangioma is often invisible at birth and is found within one month after birth, starting as a small red spot, then growing rapidly, stopping growth around 1 to 2 years of age and gradually degenerating and healing. It is three times more common in females than in males. It is called strawberry capillary hemangioma because it is shaped like a strawberry. In addition to skin, it can also involve subcutaneous and muscular tissues, but usually does not invade bone tissue. The kasabach-merrit syndrome is a relatively common syndrome associated with capillary hemangioma and was first reported in 1940. It presents as a large capillary hemangioma in infants and children with thrombocytopenic purpura, which is not solely due to thrombocytopenia but is also the result of a wasting coagulopathy. This syndrome accounts for only 1% of the population of infants and children with hemangioma, but the morbidity and mortality rate is as high as 50%. The principle of laser treatment relies on selective photothermolysis: selective photothermolysis refers to the use of capillary hemoglobin absorption peak near 940nm wavelength, while the surrounding tissue absorbs less heat, and the principle of inter-pulse heat dissipation to achieve a higher selective thermal coagulation of hemoglobin, eventually leading to vascular occlusion. 3, the advantages of laser treatment: simple operation, no incision, minimal pain, low cost, no hospitalization, do as you go.