Patients with chronic gastritis with bile reflux can eat fish, but they should pay attention to the right amount and not eat too much. Bile is secreted by the liver and discharged into the gallbladder. Under the stimulation of food, the gallbladder contracts and discharges bile into the duodenum, where it participates in the digestion and absorption of food. Bile cannot reach the stomach and esophagus through the pylorus, but under pathological action bile can reach the stomach and esophagus retrogradely, causing chronic gastritis with bile reflux. Such patients should pay attention to eating a light, easy-to-digest diet, such as eating more thin rice and noodles, eating more dietary fiber-rich foods such as vegetables, eating more fruits, avoiding overeating, avoiding alcohol, and avoiding overly greasy foods. In addition, patients with bile reflux can take certain medications to treat it.