Stenting and external drainage for bile duct cancer can be done at the same time, and percutaneous hepatic puncture biliary drainage and stenting are effective means to relieve jaundice. Cholangiocarcinoma can cause malignant obstructive jaundice, presenting progressive aggravation of jaundice, accompanied by itching of skin, abdominal pain, nausea and vomiting, etc. Fever can be seen in accompanied infection. External biliary drainage combined with stent implantation can effectively relieve the pressure of bile ducts, reduce serum bilirubin level, minimize the occurrence of complications, help to restore liver and kidney functions, and improve the quality of patients’ survival. Of course, whether cholangiocarcinoma patients need external biliary drainage combined with stent implantation at the same time should be considered by clinicians according to patients’ conditions, clinical symptoms, etc. Please follow the doctor’s instruction to standardize the treatment.