The insertion of a tube in the stomach is considered to be related to appendicitis, cholecystitis, pancreatitis and other diseases. 1. Appendicitis: generally due to appendiceal suppuration or even gangrenous perforated appendicitis, abdominal insertion of drainage tube is helpful to reduce the absorption of peritoneum, reduce the infection and prevent the production of abdominal abscess. 2. Cholecystitis: The insertion of a tube above the stomach in patients with cholecystitis can help to pressurize the stomach and intestines and relieve nausea, abdominal pain, bloating and other abdominal discomforts, usually through the insertion of a gastric tube to decompress the stomach and intestines, suctioning out gastric juices and reducing the contraction of the gallbladder, thus achieving the role of symptomatic relief. 3. Pancreatitis: It may be due to the fact that pancreatitis produces a large amount of necrotic material in the pancreas, which can’t be completely removed by surgery, and needs to be drained from the abdominal cavity to draw out the necrotic material, which can be a therapeutic effect. When the body is not feeling well, you should go to the hospital in time for treatment, do not delay, so as not to delay the condition.