The action should be gentle, explain well before the operation to obtain the patient’s cooperation, and explain to the patient how to cooperate in the process of operation, paraffin oil can be applied more, if necessary, the patient can take 10ML paraffin oil orally to lubricate the esophagus and facilitate the operation. Judgment of the gastric tube in the stomach: 1, with a syringe back can be drawn from the gastric tube gastric contents; 2, with a syringe into the gastric tube, with a stethoscope in the stomach to hear the sound of gas over water; 3, the gastric tube into the water without bubble overflow. The tube should be fixed properly to prevent folding and dislodgement; the fixed gastric tube should be attached to the tip of the nose with white rubber tape, and the tape should be changed daily; the length of the tube should be inserted appropriately, generally about 45—55cm for adults. When moving or turning the patient, prevent the gastric tube from dislodging or folding. Observation operation Ensure the smoothness of the gastric tube and flush it regularly, every 4 hours. When flushing, choose a 5 or 10 ml syringe to flush the gastric tube with 3-5 ml of saline according to the situation. Be careful not to use too much force when flushing. If there is resistance, do not flush hard to avoid damaging the gastric wall or anastomosis and causing bleeding or anastomotic fistula. If there is resistance to flushing, the gastric juice should be pumped back first, and if gastric juice is pumped out, it means the gastric tube is open and can be flushed again. If no gastric juice can be pumped or if there is resistance to flushing, the doctor should be notified for timely treatment; gastric juice should be pumped regularly according to the secretion of gastric juice, usually once every 4 hours. When suctioning gastric juice, the suction force should not be too large to avoid damaging the stomach wall and causing mucosal damage and bleeding; closely observe the color and nature of gastric juice (usually dark green, if the color is bright red, it indicates bleeding in the stomach. If the color is coffee-colored, it suggests that there is old blood in the stomach.) The amount of gastric fluid (if the amount of gastric fluid is too much, it may cause water-electrolyte disorder), and make records to report to the doctor in time. Nasal feeding tube care Gastric tube or fasting patients oral cleaning is very important. Encourage patients to brush their teeth and rinse their mouths, and give oral care to patients who cannot take care of themselves or patients who are in coma. For nasal feeding patients, record the date of placement, mark it on the gastric tube, change it every 7 days, pull it out after the last nasal feeding in the evening of the same day, and place it by the other nostril on the second day, and mark the date again. After nasal feeding, flush the tube with 10-20ml of warm boiled water to prevent food residues from remaining in the gastric tube and place the tube properly. Continuous nasal feeding should be evenly instilled; the temperature of nasal feeding should be suitable, about 35℃ is appropriate. The temperature of nasal fluid should be the same as the room temperature during continuous instillation, and clear the secretions from mouth and nasal cavity in time.