MRPC is a misnomer, the correct name is MRCP, which belongs to a kind of MRI examination, is a kind of examination method to visualize the pancreatic and biliary ducts, does not need interventional treatment as well as drug injection itself, and is a non-invasive examination. MRCP is a non-invasive test that does not require interventional treatment or drug injection. MRCP, known as pancreatobiliary hydrography, is mainly performed under MRI equipment, and shows the specific organization of the pancreatic bile ducts through a special sequence of scans. At the end of the examination, it is processed through the MRI post-processing workstation, which can show the specific condition of the pancreatic bile ducts, and check whether there are any stenosis or obstructive lesions. MRCP examination can show the location of the lesion and the impact of the lesion on the obstruction of the pancreaticobiliary duct, after confirming the specific condition, under the guidance of the clinician to carry out standardized treatment.