The causes of bile duct blockage after gallbladder removal are: heavier inflammation, secondary stones, and incomplete treatment. 1. Heavier inflammation: when the patient suffers from cholecystitis, the situation is more serious, which has spread to the bile ducts, thus making the bile ducts appear edema and congestion, and eventually causing the lumen to be relatively narrow, or even occluded. After the patient has undergone surgery, it is also easy to cause temporary bile duct blockage. 2. Secondary stones: during cholecystectomy, stones enter the common bile duct, which can also lead to bile duct stone blockage after surgery. 3. Incomplete treatment: the distal end of common bile duct is deeper, and the stones or tumors in the common bile duct are not found during examination or surgery, which may easily lead to the tumors or stones still exist in the body, thus inducing bile duct blockage. In addition, diseases such as inflammation of the duodenal papilla and pancreatic tumors can also induce this phenomenon. If bile duct blockage occurs even after gallbladder removal, patients should go to the local hospital in time to find out the problem as early as possible and treat it as soon as possible.