Abdominal pain two years after surgery for bile duct cancer may be due to tumor recurrence. Cholangiocarcinoma is a kind of malignant tumor growing in extrahepatic bile ducts, and although the incidence rate is relatively low, the malignant degree is relatively high. Due to the insensitivity to chemotherapy, radiotherapy and other treatments, lymph node invasion and metastasis may occur in the early stage, i.e. the resected tumor still has subtle invisible tumor tissues lurking in lymph nodes and blood, which may easily lead to postoperative recurrence. If the tumor recurs after surgery and metastasis in the abdominal wall, abdominal pain, abdominal distension, nausea, vomiting and other symptoms often appear. In addition, if tumor recurrence compresses or blocks bile duct and causes bile duct infection, chills, high fever, abdominal pain, jaundice and other symptoms may appear, and in serious cases, shock may be caused. Abdominal pain after cholangiocarcinoma surgery needs timely medical treatment, review in the hospital, and further abdominal ultrasound and abdominal CT to make a clear diagnosis.