Pancreas is both endocrine and exocrine gland, so the structure of pancreas can be roughly divided into endocrine and exocrine part. 1. Exocrine department: The exocrine department is composed of two kinds of cells, namely, alveolar cells and ductal cells. The main function of alveolar cells is to secrete many kinds of digestive enzymes in pancreatic juice, such as pancreatic amylase, pancreatic lipase, pancreatic protease, chymotrypsin, etc., which plays an important role in the digestive and absorption function of the human body. Ductal cells mainly secrete inorganic substances in pancreatic juice, which contain high bicarbonate, which can come to neutralize gastric acid, protect intestinal mucosa and help digestion. 2. Endocrine Division: The endocrine division consists of four different cells that make up the pancreatic islets, namely ①α-cells, which secrete glucagon to raise blood glucose; ②β-cells, which secrete insulin to lower blood glucose; ③δ-cells, which secrete growth inhibitors to regulate secretion of digestive juices; and ④PP-cells, which secrete pancreatic polypeptides to control the contraction of the gallbladder and the release of pancreatic enzymes. For patients diagnosed with pancreas-related diseases or other diseases, they should immediately go to the relevant departments of regular hospitals and be treated under the guidance of professional physicians, so as not to be negligent on their own in order to avoid delays.