Diseases of the digestive system include diseases of the esophagus, stomach, intestines, liver, bile, pancreas, and organs such as the peritoneum, mesentery, and omentum. Diseases of the digestive system are common. In China, the death rates of stomach cancer and liver cancer are the second and third in the ranking of malignant tumor death rates respectively, and the prevalence of colorectal cancer and pancreatic cancer has been on the rise in recent years. So it is important to pay attention to digestive system diseases.