The main components of pancreatic fluid include alkaline bicarbonate, amylase, lipase, trypsinogen, chymotrypsinogen, and other digestive enzymes, which can digest fats, proteins, and other effects. Pancreatic fluid is a liquid produced by the exocrine action of the pancreas. Pancreatic amylase hydrolyzes starch into maltose and glucose, and pancreatic lipase breaks down triglycerides into fatty acids, monoglycerides and glycerol. Intestinal fluid activated trypsinogen can activate chymotrypsinogen to chymotrypsin, activated trypsin and chymotrypsin have the function of breaking down proteins. If pancreatic diseases occur, such as tumors, chronic pancreatitis and biliary tract diseases cause poor excretion of pancreatic juice, usually there will be symptoms of indigestion, such as abdominal distension, diarrhea, steatorrhea and even constipation, and some patients will also have abdominal pain. The presence of the above conditions, should be timely consultation, to clarify the specific causes, and follow the doctor’s instructions for treatment.