Liver angiography, also known as hepatic angiography, is an interventional minimally invasive procedure. A hepatic angiogram is performed by inserting a catheter into the appropriate hepatic vessels under local anesthesia and injecting contrast into them to further observe whether there is thickening, enlargement, occlusion, displacement, or malformation of the vessels. These include hepatic arteriography, portal venography and hybrid hepatic angiography. Among them, hepatic arteriogram is mainly to observe the intrinsic hepatic artery and the left and right branches of hepatic artery, and there is no unrevealing of portal vein at this time, while portal vein angiography is mainly applicable to observe splenic vein and portal vein. Hepatography not only facilitates the diagnosis of liver tumors, especially in cases where the diagnosis cannot be confirmed by imaging alone, but also can be used as part of interventional treatment. For example, transhepatic artery embolization chemotherapy can be used both for clinical treatment of primary liver cancer and for hemostatic management of hemorrhage in the liver. It should be noted, however, that liver imaging is contraindicated in the presence of severe impairment of renal function, significant abnormalities in coagulation mechanisms, and intractable ascites.