Contraindications to gastric intubation include the following: 1, deviated nasal turbinates or bilateral nasal passages due to colds.2, because the esophagus has been corroded by strong acids and alkalis, gastric intubation in general may lead to perforation of the esophagus.3, esophageal varices resulting in gastrointestinal hemorrhage caused by variceal rupture, gastric intubation in general may lead to variceal damage, causing bleeding again.4, for cardiopulmonary function is relatively poor and physical condition is relatively poor, resulting in patient intolerance or strong resistance.5, psychiatric patients do not cooperate with the contraindications to intubation. Relatively poor cardiopulmonary function, and relatively poor physical condition, resulting in patient intolerance or strong resistance. 5, psychiatric patients do not cooperate with the contraindication of gastric tube. For some observation and care of the gastric tube, you also need to see if there is gastrointestinal decompression, drainage, timely replacement of the gastric tube.