Congenital vascular malformation is a vascular malformation caused by abnormal or incomplete development during fetal life, which can involve any part of the body and can be cured clinically with active treatment in most cases, but the overall recurrence rate is high and difficult to cure completely. Patients are advised to seek medical examination and follow medical advice for treatment in a timely manner. Congenital vascular malformations can be divided into high-dynamic and low-dynamic types. The high-dynamic type mainly includes arteriovenous malformations, while the low-dynamic type mainly includes capillary dilation, cavernous hemangioma, trapezius hemangioma, KT syndrome and so on. Capillary dilation, which mostly occurs on the face and lower extremities, is commonly known as erythema, and usually has no effect other than affecting the appearance, so no special treatment is needed. If it affects the appearance, local capillaries can also be shrunk by medication and laser treatment. Spongiform hemangioma and trabecular hemangioma have different treatment measures depending on the location and extent of growth. Vascular malformations can occur in the skull, liver, and within the orbit of the eye. Hemangiomas growing in the organs can affect the function of the organs and cause a series of symptoms. They can be eliminated by laser, surgery, injection of sclerosing agents (such as anhydrous alcohol) or interventional treatment, and improve venous access. Arteriovenous malformations occur in the heart, brain, internal organs and extremities. Congenital cardiac malformations are often accompanied by arteriovenous valve defects; intracerebral malformations may lead to life-threatening symptoms such as rupture and hemorrhage; and arteriovenous fistulas in the extremities often lead to necrosis of limb endings due to ischemia. The surgical replacement of arteriovenous valves or malformed vessels is the most important treatment, but due to the inoperable location of some malformed vessels, they can only be treated conservatively and have a poor prognosis. KT syndrome often has poor surgical results and the indications for surgery should be strictly controlled.