Gastric tubes generally use silicone gastric tubes, which are usually replaced once a month for the duration of use, and generally cannot be retained for more than two consecutive months. Ordinary silicone tube in the use of the period, unless the gastric tube occurs blockage, there is no way to clear before considering the replacement of the tube. Usually through the insertion of gastric tube to reduce the pressure in the stomach, can reduce the capacity of the stomach, is conducive to relieving abdominal distension, to avoid the downflow of gastric juices leading to intestinal obstruction, but also through the amount and color of the drainage fluid, to observe the total amount of fluid in the stomach and the amount of fluid, insertion of gastric tube can appear nausea, vomiting, drooling and other adverse reactions. The indwelling gastric tube is commonly used in the postoperative period of gastrointestinal and biliary tract and pancreatic surgery, intestinal obstruction, pancreatitis and esophageal cancer. Gastric tube should be rinsed in time to avoid harboring harmful bacteria, and the tube should be observed before and after meals to avoid affecting normal use.