Some newborn babies have a small red dot or a red birthmark on their bodies. Most parents think it is a skin allergy or a common mole and do not take it seriously until it grows bigger and bigger and then they go to the hospital for examination and realize that it is actually a hemangioma or a vascular malformation. Is hemangioma a birthmark? There are two main types of birthmarks: vascular and pigmented. The former is clinically manifested mainly as red, while the latter is manifested as darkening (black) and hypopigmentation (white). What we usually refer to as “red birthmarks” are vascular malformations, not hemangiomas. At present, congenital vascular lesions are generally classified into two categories: hemangiomas and vascular malformations, which are distinctly different in terms of clinical manifestations and biological characteristics. Clinically, the former vascular endothelial cells have proliferative characteristics and the natural course of the disease can be divided into proliferative, stable and receding phases, while the latter endothelial cells are normal and characterized by abnormal expansion of blood vessels, which will not recede naturally, such as bright red nevus. Will it fade away by itself? There is a certain regularity in the natural pathogenesis of hemangioma. Most of them have no obvious manifestation when they are first born, but gradually appear in the days or weeks after birth, and generally increase at a faster rate within 6 months of age. The growth rate is usually faster during the first 6 months of age. Then, the hemangioma gradually enters a stable phase, followed by a receding phase. Will it be serious? Most hemangiomas and vascular malformations are benign tumors. Some of them grow on the surface of the skin or even protrude out, and their color lightens when pressed and returns in a short time; some grow deeper and are embedded in deep subcutaneous, muscular and other tissues, which are difficult to see from the outside. They may lead to abnormal appearance, pain in the limbs, activity disorders, and even loss of function of organs. Do infant hemangiomas need to be treated? Generally, if the proliferation of infantile hemangioma is mild, the prognosis is relatively good, and if the lesion is located in non-exposed non-functional areas, it can be temporarily followed up and observed, and if it increases rapidly, timely intervention can be considered. If the lesions are located in exposed areas or functional areas, most scholars would emphasize early intervention and active treatment in order to prevent the appearance defects or even functional impairment caused by incomplete regression of hemangioma. The main treatment methods for hemangiomas and vascular malformations are: topical application and oral medication, ultrasound-guided sclerotherapy injection, laser, surgical excision, interventional embolization, electrochemical therapy, copper needle embolization, etc. We combine the advantages of the general hospital of Beihang Medical College with several departments to provide individualized and comprehensive sequential treatment plans for patients of all ages and stages of disease, based on continuous improvement of each special technology, so that patients can receive definitive treatment and achieve better results.