The area above the navel covers a wide range, mainly containing the stomach, pancreas, transverse colon, small intestine, etc., with the digestive system as the main focus. If patients only occasionally have vague pain in the upper abdomen, it is considered that it may be due to irregular diet and overeating, and if it occurs regularly, it is considered a disease cause, of which the more common diseases are: a. Chronic gastritis: can make patients appear in the upper abdomen discomfort The patient can also experience a lack of appetite, acidity, nausea and other indigestion symptoms. Mostly due to Helicobacter pylori infection, duodenal gastric reflux, autoimmune system decline, ageing and other factors can also be caused; 2, indigestion: can make patients appear persistent, recurrent epigastric discomfort, and postprandial fullness is obvious, and even abdominal flatulence, anorexia, nausea, vomiting, acid reflux and other symptoms. Mostly related to digestive system diseases such as reflux esophagitis, esophageal cancer and other esophageal lesions, as well as the patient’s own age, gastrointestinal tract dysfunction; 3, peptic ulcer: the patient’s gastrointestinal mucosa is digested by gastric acid and pepsin and ulcers, mostly in the stomach and duodenum, can cause patients to have recurrent episodes of rhythmic pain in the upper and middle abdomen, a few patients will also be accompanied by gastric bleeding, perforation and other complications 4, colitis: If the patient, in addition to epigastric pain, is accompanied by diarrhea, mucus stool, pus and blood stool, urgency, constipation, inability to pass stool for several days and other symptoms, then consider the possibility of colitis. Second, pancreatic diseases: such as pancreatitis, can lead to persistent epigastric pain, abdominal distension, and in severe cases, nausea, vomiting, pain involving the entire abdomen. The disease occurs mostly with digestive enzymes due to various reasons resulting in inflammatory damage to the cells of the pancreas. In addition, some extra-abdominal diseases such as pneumonia, pulmonary infarction, angina pectoris, myocardial infarction, acute pericarditis, etc. can also cause patients to develop systemic symptoms that lead to pain above the belly button, but these cases are rare and can be diagnosed differently by consulting a doctor to improve relevant tests.