A gastrostomy tube is used to deliver water and food to the patient. It also allows for gastric decompression. A gastric tube is a catheter that is inserted into the stomach from the nose or mouth through the oropharynx and esophagus, and can be used to withdraw gastric juices through the catheter to inject water, fluid, medications, and other ingredients. Gastric tubes are usually placed in patients with special conditions, such as oral diseases or swallowing disorders, to provide the patient with the necessary water and food. Gastric tubes are divided into orogastric tubes and nasogastric tubes. After insertion of the gastric tube, gastric fluid can be extracted for examination to determine whether the gastric tube is in the stomach, and then food, water, or medication can be injected to maintain the patient’s normal vital signs. In addition, gastric tube can also be used for gastrointestinal decompression. Gastrointestinal decompression is mainly used for patients with intestinal obstruction, digestive tract perforation or gastrointestinal tract after surgery, which can utilize the principle of negative pressure attraction to discharge the gas and liquid gathered in the gastrointestinal tract through the gastric tube to achieve the purpose of lowering the pressure in the gastrointestinal tract. The insertion of the gastric tube needs to be carried out under the operation of professional business personnel. If the gastric tube is dislodged, the doctor needs to be informed promptly.