Biliary tract cancer embolism is less common than portal vein cancer embolism, and the prognosis is slightly better than portal vein cancer embolism, but the obstructive jaundice caused by it is more dangerous. Therefore, if the tumor can be removed, the peripheral bile duct cancer embolus can be removed together with the tumor. If the liver tumor cannot be resected for various reasons, surgical bile duct embolization can also be performed, especially when transduodenoscopy or percutaneous biliary drainage fails; TACE, ablation or radiotherapy can be considered for the tumor to prolong the patient’s survival time and improve the quality of life.