Chronic gastritis with bile reflux can cause damage to the gastric mucosa, which needs to be monitored regularly for changes in the gastric mucosa, and it is recommended that gastroscopy be repeated once every 1~2 years. Patients can have chronic gastritis because of long-term gastric inflammation, pyloric sphincter relaxation, which can lead to long-term bile reflux, damage to the mucosa of the gastric wall, and need regular gastroscopy to observe the lesions of the gastric mucosa, to avoid the occurrence of gastric mucosal malignant changes, and it is generally sufficient to do gastroscopy once every 1~2 years. Before gastroscopy, patients are advised to consult their physicians and prepare their digestive tract in advance, such as fasting and water fasting one day before gastroscopy, so as to avoid affecting the results of gastroscopy due to insufficient preparation, and the specific time of review can be based on the advice of professional physicians.