If a blocked gastric tube is encountered in the clinic, the contents of the blocked gastric tube can be withdrawn with a syringe or injected with 10-20mL of saline to clear it. In order to enter the esophagus and stomach through the nasal cavity or oral pharynx, the lumen of the gastric tube is usually relatively small, and if the family or nursing care does not pay attention to feeding a liquid diet, and the food is not broken up or thick, it will be very easy to cause blockage of the gastric tube. If the blockage is not serious, a 20-50 ml syringe with negative pressure can be used or 10-20 ml of saline can be quickly injected to clear the gastric tube. If it is ineffective, the blockage may be serious, then a new gastric tube is needed immediately to avoid delaying the treatment. Therefore, nursing staff should be more concerned about the care of the gastric tube to prevent secondary damage to the patient. It is recommended to go to the hospital in time for early and regular treatment.