Checking the pancreas usually requires fasting. Pancreatic examination includes blood test for amylase, lipase, tumor marker, etc. Imaging examination includes ultrasound, CT, MRI, etc. Pancreas belongs to digestive organs, and the increase of pancreatic enzyme secretion after eating will affect the results of the blood test; moreover, the increase of gastrointestinal peristalsis and the increase of gastrointestinal contents after eating will affect the imaging examination. Therefore, fasting is usually required to examine the pancreas. Common diseases of the pancreas include pancreatitis, pancreatic tumors, etc. If pancreatitis is suspected, amylase can be measured, and if tumors are suspected, tumor markers, ultrasound and CT can be measured. Pancreatic diseases are mostly related to overeating, hyperlipidemia, infections, genes, etc. Therefore, it is necessary to maintain good living habits to reduce the probability of pancreatic diseases. Patients with pancreatic diseases need to seek timely medical treatment, improve relevant examinations and actively cooperate with the treatment.