Just done gastric esd surgery insert gastric tube specific insert how long gastric tube depends on the specific condition, generally 3 to 7 days ranging. esd surgery refers to endoscopic submucosal dissection, which can be used to treat submucosal tumors, giant polyps and other diseases. It is a method of selecting submucosal stripping treatment through endoscopy. The surgery is less traumatic, the treatment is more thorough, and the recurrence rate is also very low, which is a kind of treatment that is more emerging nowadays. The main function of gastric tube can stop bleeding and medication through the gastric tube, how long the gastric tube needs to be inserted depends on the specific condition, usually ranging from 3 to 7 days. When inserting a gastric tube, it is necessary to keep the negative pressure drainage of the gastric tube open, and to ensure that the glass tube at the interface between the gastric tube and the drainage tube should be of large caliber, so as to avoid the blockage of the tube by food and blood clots in the stomach. After inserting the gastric tube, it needs to be fixed properly to prevent it from falling off. Pay more attention to recuperation, do not eat for the time being, so as not to irritate the gastrointestinal tract to affect the recovery of the condition. After the gastric esd surgery discomfort, it is recommended to consult a doctor in a timely manner, under the guidance of a professional doctor standardized treatment, so as not to delay the condition.