The left upper abdomen has the stomach, colon splenic flexure, pancreas, spleen, and left kidney, in this area if the patient has abdominal pain, bloating, dyspepsia, or even abnormal defecation, reflux, heartburn, and abnormal urination, some of the following diseases should be ruled out: 1. Whether there is gastric disease, the patient will have the corresponding reflux, heartburn and other discomforts, and can be ruled out by performing gastroscopy, Helicobacter pylori, and other such tests. 2, If the patient is accompanied by left upper abdominal pain, digestive discomfort, abdominal distension, it must be recommended to the patient, it is best to have the conditions for abdominal CT or magnetic detection, because the pancreas is in the posterior peritoneal organs, if the patient is obese or bloating is obvious, and often the pancreas can not be observed clearly, so the upper abdominal CT can be effective in ruling out pancreatic and splenic disorders. 3, if the patient appears to have an abnormality of defecation, it is recommended that the patient can be performed If the patient has abnormal bowel movement, it is suggested that the patient can undergo colonoscopy to exclude whether there is any disease in the colon. 4, if the urine is uncomfortable to exclude kidney disease, it can also be further clarified by abdominal CT to diagnose.