Pancreatic malignancy is one of the common diseases in clinical practice. Generally speaking, patients with pancreatic malignant tumor often do not have obvious clinical symptoms in the early stage of the disease. With the progressive development of the tumor, the tumor cells may invade the surrounding organs and tissues, thus the patient will have a series of symptoms. What are the tests that can be performed to identify pancreatic cancer? Generally speaking, the following tests are often used to identify the tumor of pancreas: 1. Ultrasound examination of pancreas. Ultrasound examination includes general ultrasound and ultrasonography. When the pancreas is accompanied by lesions, ultrasound examination is convenient, easy and reproducible. The specific location of the pancreatic lesion can be clarified through color ultrasound examination. If the diagnosis of the lesion cannot be determined, ultrasonography can be combined with ultrasound to observe the changes of the pancreatic lesion under the filling of contrast agent to assess the specific nature of the pancreatic tumor. 2. Pancreatic CT scan plus enhancement examination. CT examination of the abdomen is not interfered by the pneumatization of intestinal ducts, and it can clarify whether the pancreatic lesion is accompanied by invasion of surrounding tissues and organs and whether there is dilatation of pancreatic ducts, and the relationship between the pancreatic lesion and portal vein, common bile duct and hepatic artery can be evaluated by enhanced CT examination of the pancreas. It is very important for guiding surgical resection. 3. Magnetic resonance imaging of the pancreas with enhancement. MRI can detect smaller pancreatic lesions compared to CT, and the imaging of bile ducts and blood vessels is clearer. Bile duct reconstruction imaging can be used to clarify whether the bile ducts are severely invaded. It is more accurate to assess whether surgical resection of pancreatic lesions is feasible.