Bile drainage from the bile duct is getting less and less, usually seen in these three cases, such as intra-abdominal wound has been healed, bile through the bile duct normal drainage; drainage tube of the abnormality; liver function abnormality. 1. Wound healing: the bile duct wound has healed, bile is excreted into the intestine through the bile duct, bile is normally excreted from the bile duct, naturally there is no bile infiltration inside the abdominal cavity, so the drainage is getting less and less. This is the best result, indicating that the operation is successful and the wound is healing well. 2. Abnormal drainage tube: There may be problems with the drainage tube, such as blockage or pressure on the drainage tube, so that the bile cannot drain out of the body smoothly. 3. Abnormal liver function: It can also cause the bile drainage to become less and less, mainly because the function of liver secretion decreases, the bile discharge is less, so the drainage flow is also less. If bile drainage from the bile duct is getting less and less, you should consult a professional doctor for proper diagnosis and treatment.