Gastroscopy is one of the invasive operations commonly used in gastroenterology, it is generally recommended not to eat or drink within 2 hours after gastroscopy, because gastroscopy is irritating or damaging the gastric mucosa, such as short-term oral food, which can lead to gastric discomfort or pain. It is generally recommended to eat liquid or soft food after 2 hours, such as millet porridge or pasta, avoid spicy and stimulating food, avoid alcohol and tobacco. In addition, oily food or milk or soy products are recommended to be eaten sparingly, as they can lead to a feeling of fullness and cause stomach discomfort. If there are symptoms, such as stomach pain or nausea, vomiting, it is recommended to take oral medication to protect the gastric mucosa, such as proton pump inhibitors. If the effect is not good, it is recommended to go to the gastroenterology department for formal treatment to prevent gastrointestinal bleeding.