The bile duct drain can be clamped for about 2 to 3 hours a day, or more than 10 hours at a later stage after gradual acclimatization. Bile duct drains, also known as T-tubes, are usually placed in the patient’s body after bile duct surgery to drain bile. The tube can be clamped for 2 to 3 hours a day, and if there is no obvious discomfort, the time can be extended to 10 hours a day or even longer. After the bile duct drain is clamped, it is necessary to take proper rest and actively observe the shape of the drainage fluid. If there are abnormalities such as abdominal pain or jaundice, it is necessary to release the drain and consult a doctor in time. The clamping time of the bile duct drain can be adjusted every day, and must be correctly clamped under the guidance of the doctor, so as to promote the recovery in the later stage.