Since pancreatic cancer has no specific symptoms in the early stage, it is difficult to diagnose clearly in the early stage, thus 85% of the patients are diagnosed when the cancer has invaded the surrounding large blood vessels or organs and cannot be removed. Therefore, we should pay high attention to the high-risk group of pancreatic cancer. The Pancreatic Group of the Chinese Medical Association has developed the concept of high-risk groups for pancreatic cancer, as follows: 1. those who are older than 40 years old, with no obvious cause of epigastric fullness and discomfort, abdominal pain, accompanied by weight loss; 2. those who have a family history of pancreatic cancer; 3. those with sudden onset of diabetes, especially atypical diabetes, who are older than 60 years old, lack of family history, no obesity, and soon become insulin resistant. 40% of pancreatic cancer Chronic pancreatitis is an important precancerous lesion in a small number of patients, especially chronic familial pancreatitis and chronic calcific pancreatitis; 5. Mucinous papillary tumors in the ducts of the pancreas are also precancerous lesions; 6. Benign lesions undergoing major distal gastric resection, especially those more than 20 years after surgery; 7. Smoking, heavy alcohol consumption, and long-term exposure to harmful chemicals, etc. If abnormalities are found in the pancreas, a thin scan of the pancreas plus enhanced CT examination should be performed to clarify the diagnosis as early as possible and strive for surgical resection for the purpose of cure. In clinical practice, we often encounter many patients with epigastric fullness and discomfort and abdominal pain, which are misdiagnosed as chronic gastritis and given symptomatic treatment that is ineffective, and then imaging is performed when the symptoms are obviously aggravated and unbearable, and the cancer is already locally advanced and cannot be removed.