ERCP is a minimally invasive surgery and is one of the most difficult endoscopic procedures. Postoperative care is more important for the recovery of patients in the following ways: 1. Psychological care: it is more common for patients to be nervous after surgery, insecure about the expected disease regression, and nervousness may aggravate the patient’s subjective pain experience, and patients should be given psychological reassurance after surgery to reduce tension for recovery. 2, dietary care: postoperative fasting should be routine, the length of fasting varies, according to the patient’s blood biochemical indicators, in accordance with medical advice, gradually resume a liquid or semi-liquid diet, usually four hours of fasting and then recheck the blood amylase, lipase, if the index is not high, can resume a liquid diet; 3, observation of the condition: because the operation is invasive surgery, postoperative observation of the patient’s vital signs changes and major complications, including pancreatitis, hemorrhage, perforation. including pancreatitis, bleeding, perforation, infection, etc. It is important to detect changes in the patient’s condition and make corresponding dispositions in time to avoid serious and irreversible complications.