The operation process of gastric tube insertion, the specific steps are as follows: 1, fully inform the patient of the necessity of gastric tube, relieve the patient’s nervousness and anxiety. 2, ask the patient to perform a semirecumbent position, with the head tilted to the side, the gastric tube will be coated with paraffin oil, and then enter the patient’s side of the nostrils. 3, the gastric tube enters the nose, the patient will often cough, and ask the patient to take a deep breath. When the gastric tube reaches the epiglottis, ask the patient to do a swallowing action, so as to facilitate the smooth entry of the gastric tube into the esophagus.4. Once the gastric tube enters the esophagus, the patient’s coughing symptom will be obviously improved, continue to encourage the patient to relax and take a deep breath, and then stop the operation when the gastric tube’s graduation reaches 50-60cm, and fix the gastric tube to avoid dislodging.5. Ask the patient to turn over to protect the gastric tube during the activities, so as to avoid dislodging the gastric tube, and need to insert the gastric tube again. Place the tube again.