Most hepatic hemangiomas are cavernous hemangiomas are a common benign tumor of the liver that can occur at any age, but often present in adults with symptoms, more often in women. Hepatic hemangioma is the most common benign tumor in the liver The etiology of hepatic hemangioma is not yet clear, but is mostly thought to be related to congenital developmental abnormalities, and may be related to the following factors: ① deformation of capillary tissue after infection and capillary dilation; ② expansion of blood vessels after local necrosis of liver tissue to form a vacuole, and vascular congestion and expansion around the necrotic liver tissue to finally form a vacuole; ③ regional blood circulation in the liver after stagnation, resulting in the formation of blood vessels (3) regional blood circulation stagnation in the liver leads to the formation of spongy dilation of blood vessels, and persistent venous blood stagnation in the liver leads to venous expansion; (4) intrahepatic hemorrhage, hematoma mechanization, and vascular recanalization lead to vascular dilation; (5) abnormal vascular development leads to vascular spongy dilation, which is the most acceptable theory. Hepatic hemangiomas vary in size, with small ones requiring microscopic diagnosis and large ones reaching the pelvis and weighing more than 18 kg, and most are seen clinically to be large. They are usually located in the right lobe and 90% are solitary. The tumor is purple-red or purple-blue in color, soft in texture, with clear borders and a reticular pattern in the cut surface. Hepatic hemangioma can be divided into 4 types. ( 1 ) Hepatic cavernous hemangioma is the most common, with a honeycomb-shaped section, sinusoidal cavity separated by fibrous tissue, wall covered by endothelial cells, cavity filled with blood cells and mechanized thrombus, small vessels and remnant bile ducts in the fibrous septum, and may have calcification or venous stone; ( 2 ) Sclerosing hemangioma with collapsed or closed cavity, extremely abundant fibrous tissue in the septum, and degenerative changes in the hemangioma; ( 3 ) Hepatic capillary hemangioma is rare. The lumen is narrowed and the septal fibrous tissue is abundant; ( 4 ) hemangioendothelial cell tumor is rare and is between benign hepatic hemangioma and hepatic hemangioendothelial cell sarcoma. The clinical manifestations of hepatic cavernous hemangioma are related to the location, size, growth rate and the degree of liver parenchyma involvement. Small ones are asymptomatic, while large ones may have abdominal pain, abdominal distension, nausea, vomiting and prolonged hypothermia, etc. A few huge ones may have xanthogranuloma, anemia and bleeding tendency, and spontaneous rupture of hemangioma causing intra-abdominal bleeding is rare. The liver is the largest gland in the human body and the largest digestive gland, which plays an important role in maintaining human life activities and the internal environment. It is not only involved in the metabolism of three major substances in human body, but also related to detoxification, bile secretion, phagocytosis defense and other functions, so people figuratively call the liver as the “chemical factory” of human body. The liver is one of the most common benign tumors, and hepatic hemangioma is one of the most common benign tumors in the liver, which is caused by malformation of blood vessels in the liver. Hepatic hemangioma is often divided into two types: one is cavernous hemangioma, which is common in middle-aged patients, mostly single or multiple, with a tumor diameter of more than 3 cm, or even occupying the entire liver lobe, which is more common; the other is capillary hemangioma, which is common in young children, often multiple, with a small tumor body and a diameter of less than 2 cm, which is less common. Because of the slow growth of hepatic hemangioma, the course of the disease is often more than several years. 50-70% of patients may not have any symptoms and are only found during physical examination or other reasons such as ultrasound or CT examination. A few patients with larger tumors (5cm or more) may have compression symptoms, mainly vague pain or discomfort in the upper abdomen, anorexia, nausea and vomiting, and also long-term fever, chills and night sweats, similar to liver abscess. The enlarged tumor may compress and push the neighboring organs, and various corresponding symptoms may appear, such as difficulty in swallowing, abdominal distension, abdominal pain, belching, jaundice and ascites, etc. Pregnant women may affect the delivery. If the hemangioma ruptures due to trauma or emergency delivery, it may cause intra-abdominal hemorrhage and shock. The hemorrhage inside the tumor may erode the bile ducts in the liver and cause hemorrhage and biliary hemorrhage. Ultrasound, CT and MRI can clearly diagnose hepatic hemangioma and can well differentiate it from liver cancer and liver cysts. Angiography is only used when the diagnosis is unclear or doubtful by the above methods. Treatment is often not necessary when the hepatic hemangioma is small (less than 5 cm) and the patient does not have any symptoms or liver damage. If the tumor is more than 5 cm in diameter or grows by more than 1 cm in diameter in 2 months, especially if the tumor is symptomatic, active treatment is necessary. Surgical resection, interventional hepatic artery embolization, etc. can be used. At present, interventional treatment has become the first choice for hepatic hemangioma treatment. The use of vascular sclerosing agent and iodinated oil to embolize hepatic hemangioma via hepatic artery has achieved better results. It is worth promoting.