How to relieve vomiting from bile duct cancer depends on the specific cause of vomiting. If bile duct cancer causes infection and fever, resulting in gastrointestinal reaction and vomiting, the vomiting may be relieved by controlling the infection. Anti-emetic symptomatic treatment can also be given when vomiting. If the bile duct cancer grows up to compress the intestine or cause obstruction in the gastrointestinal tract, a gastrointestinal anastomosis must be performed surgically to solve the vomiting problem. If it is vomiting after surgery, we have to find out the specific reasons and have different treatment methods for different reasons. Infection causing vomiting must be treated for infection. Bile duct cancer surgery is relatively large, and after resection, bile-intestinal anastomosis or even gastrointestinal anastomosis has to be done, which has more anastomoses. Therefore, it is necessary to make appropriate treatment for poor recovery of gastrointestinal function. You can do acupuncture, give drugs to promote gastrointestinal peristalsis, or do physiotherapy, etc.