Postoperative precautions for bile duct stones are directly related to the surgical approach. T-tube drainage for common bile duct excision and extraction requires attention to the following aspects: 1. The T-tube needs to be properly fixed, not twisted, to keep the drainage flowing smoothly; 2. It needs to be fixed firmly, and the patient should pay attention to avoid violent pulling when moving around; 3. The T-tube needs to be kept open in the early stage and placed in a low position. If the patient has abdominal pain, jaundice and fever during the clamping process, the drainage tube should be opened immediately. 1-2 months later, a cholangiogram should be performed, and if no stones remain, the T-tube can be removed; 4, if the T-tube is not placed during the surgery with one-stage sutures, the abdominal drainage tube should be closely observed for bile leakage. If there is fluid in the abdominal cavity, early puncture and drainage of the abdominal fluid is needed to avoid abdominal infection; 6, also need to pay attention to the regular diet, diet based on light and easy to digest food. Eat more fresh fruits and vegetables, do not eat high-fat greasy food. Eat regularly, eat little and often, do not overeat.