With the widespread use of laparoscopic technology, the incidence of medically induced bile duct injury is on the rise. Since medically induced bile duct injury has already occurred, if early detection and early diagnosis can be made, followed by reasonable and effective treatment, it will greatly reduce the patient’s pain and the consumption of medical resources. Intraoperative detection of bile duct injury and correct diagnosis is the best time. This requires the surgeon to be patient and attentive. The wound must be properly cleaned before the end of surgery and reasonable drainage placed if necessary. Bile duct injury is detected and correctly diagnosed in the early postoperative period (within one week). At this time, the surgeon is required to carefully observe changes in the condition, such as the presence of abdominal pain and distension, fever, nausea, vomiting, yellow or not yellow urine, color of stool, abstract laboratory tests for changes in blood leukocytes, transaminases, bilirubin, and the nature and amount of abdominal drainage fluid. If necessary, ultrasound and CT examinations should be performed to understand the presence or absence of abdominal fluid. MRCP examinations are performed to understand the structure and integrity of the biliary system. In addition, PTC and ERC can be performed to accurately diagnose the type and extent of bile duct injury.