Imaging methods for the pancreas are mainly as follows: 1. Ultrasound (US): inexpensive and highly popular equipment. Due to the deep location of the pancreas and the presence of gas-containing intestinal ducts in front, conventional US is not of high value. Ultrasound endoscopy (EUS): It is a product of the combination of ultrasound and endoscopy. The ultrasound probe penetrates deep into the digestive tract and is close to the surface of the pancreas, which not only can directly display the pancreas and the structures around the pancreas, but also can directly puncture for biopsy and treatment, so it has high diagnostic and therapeutic value for pancreatic lesions. The low penetration rate of the equipment and the experience of the operator and the ability to interpret the puncture pathology are its main drawbacks. 3. Computed tomography (CT, MPR): It is one of the most used pancreatic imaging techniques, and the scan layer thickness should be thinned to 3-5 mm for the pancreas, which has high value for common diseases such as pancreatic tumors, inflammation and congenital anomalies, but it has little ability to show the edema of simple edematous pancreatitis. “Pancreatic thin CT flat scan and enhanced scan + multiplanar reconstruction (MPR)” is the most mature and classic imaging test for diagnosing pancreatic cancer. 4.Magnetic resonance imaging (MRI, MRCP): It is an important technique for pancreatic examination, and its value is similar to CT in the diagnosis and differentiation of pancreatic diseases, but it is significantly better than CT in showing edema of pancreatitis. “Pancreatic thin-layer MRI plain scan + enhancement scan” is the best examination method for diagnosing early pancreatic cancer and judging liver It is the best examination method to diagnose early pancreatic cancer and determine liver metastasis. 5.Endoscopic retrograde cholangiopancreatography (ERCP): It can directly show the pancreatic ducts and is mainly operated by gastroenterologists. It should be noted that ERCP can only show the lumen of the pancreatic duct, but not the pancreatic parenchyma and peri-pancreatic structures. If only from a diagnostic point of view, ERCP alone is rarely relied on at present, and is replaced by CT, MRI, US and other examinations. 6, PET-CT: It is a product of the combination of CT plain and single contrast isotope, mainly used to determine the metabolism of the lesion. According to my own experience, ductal adenocarcinoma, IPMN, solid pseudopapillary tumor, neuroendocrine tumor, autoimmune pancreatitis and other lesions may manifest as hypermetabolic masses in the pancreas. Due to the short time of application and limited experience, it is generally rarely used alone for pancreatic cancer diagnosis, but in combination with other tests, it still has some value in differentiation. It is not enough to know what tests are available, but the key is to perform “progressive and in-depth” tests. In my opinion, the above mentioned examinations can only be considered as screening, but specific qualitative scans should be performed in detail, including thin layer, multiplanar reconstruction, dynamic enhancement, regular follow-up, etc. Of course, consultation by imaging specialists with rich experience in film reading is the most crucial. The rush to give traumatic treatment such as surgery based only on the preliminary examination is the main reason for the unsatisfactory results of many patients.