The peak time of recurrence after mid-term surgery for bile duct cancer is usually three months, six months, one year, one and a half years after surgery. Cholangiocarcinoma has a high degree of malignancy and is highly prone to recurrence after surgery. According to research, in general, the probability of recurrence after surgery for bile duct cancer is large, usually above 50%, and the peak time of recurrence is mainly in the following four time periods: three months after surgery, six months after surgery, one year after surgery and one and a half years after surgery. Patients in this period of time must pay attention to the postoperative care, follow up and review on a regular basis, pay attention to the changes of their body at all times, and seek medical treatment when they have any discomforts. In addition, they should pay more attention to nutrition, regular work and rest, and appropriate exercise in their daily life to strengthen their body’s immunity, resist diseases, and reduce the recurrence rate after surgery.