Buccal syndrome is a series of clinical symptoms due to partial or complete obstruction of the hepatic veins and/or the inferior vena cava of the hepatic segment causing impairment of inferior vena cava and/or portal venous return. Such as right upper abdominal pain, hepatosplenomegaly and ascites, and lower limb edema. If not diagnosed and treated in time, it will lead to portal hypertension, rupture and bleeding of esophageal varices, poor liver function, coagulation dysfunction, and in late stages, liver failure and hepatic encephalopathy leading to death. Traditional treatment: drug treatment is ineffective. Surgical treatment, which is very traumatic and requires opening the abdominal cavity for vascular surgery of complex vessels, is also costly. Interventional treatment: the balloon stent can solve the patient’s problem quickly, without incision, safely, minimally invasive (only a small 2mm incision in the skin of the thigh root or neck), with little pain and fast recovery. The key is the efficacy and its has become the treatment of choice.