The feeling of food going up after eating is mostly seen in gastroesophageal reflux disease and functional gastric disease, bile reflux gastritis can also cause this symptom, which is directly related to the poor peristaltic emptying function of the stomach or eating too much irritating food, and needs to go to the gastroenterology department for electronic gastroscopy or barium meal examination of the upper gastrointestinal tract to clarify. If it is diagnosed as functional gastric disease or GERD, it needs to be regulated with drugs such as Mosapride citrate plus multi-enzyme tablets before eating, and additional treatment with omeprazole or lansoprazole is needed when the acid reflux symptoms are more severe. If the examination clearly indicates bile reflux gastritis, it needs to be treated with drugs such as Mosapride citrate plus sodium ursodeoxycholate or aluminum phosphate gel for a course of three weeks or more. The diet should avoid overeating, drink less milk, soy milk and other foods that are easily fermented and gas-producing, and abstain from alcohol.