Heartburn in the stomach after eating may be related to acute and chronic gastrointestinal diseases, dietary factors, etc., as follows: 1. Acute and chronic gastrointestinal diseases: Consider suffering from acute and chronic gastrointestinal diseases, such as acute and chronic gastritis, gastroduodenal ulcer, gastroesophageal reflux disease, etc., can cause increased secretion of gastric acid and aggravate the damage to the gastrointestinal mucosa. 2. Spicy and cold foods, as well as strong tea, coffee, alcohol and other undesirable stimuli, can trigger the secretion of large amounts of gastric acid. When there is excessive secretion of gastric acid and a burning sensation in the stomach, remove the trigger and give proton pump inhibitors such as omeprazole, pantoprazole, rabeprazole, lansoprazole, esomeprazole, etc., as well as gastric mucosal protectors and drugs that promote gastric motility. It is important to eat warm, soft, light, easily digestible liquid or semi-liquid food, avoid spicy, cold, stimulation, eat less and more meals, do not overeat, do not drink alcohol, do not stay up late, protect the gastrointestinal mucosa, ensure sufficient sleep time, and exercise appropriately to promote physical recovery.