You can eat liquid or semi-liquid food such as thin rice, noodles, milk, etc. after gastroenteroscopy. After gastroenteroscopy, patients may cause mechanical damage to the gastrointestinal mucosa, if normal eating, food and gastric acid may stimulate the mucosa of the gastrointestinal tract, causing pain, bloating, nausea and other symptoms; at the same time, it may also aggravate the burden on the gastrointestinal tract, nausea, vomiting, loss of appetite and other indigestion manifestations. Therefore, after gastroenteroscopy patients are recommended to eat milk, millet porridge, noodles and other fluid or semi-liquid food, easy to digest, can reduce the burden on the gastrointestinal tract, and will not stimulate the gastrointestinal mucosa, play a role in protecting the gastrointestinal tract. Normal diet may be possible after 2 to 3 days of gastroenteroscopy, but attention should be paid to light diet, try to avoid eating fried chicken, spicy hot, strong tea, coffee, alcohol and other spicy and stimulating foods, so as not to stimulate the gastrointestinal tract, causing diarrhea, nausea and other symptoms, aggravate gastritis, gastric ulcer and other digestive diseases.