Fever in the stomach, mostly consider heartburn and acid reflux caused by excessive secretion of stomach acid, the common reasons are as follows: 1, psycho-spiritual factors: when under long-term stress, mental tension, over fatigue, high alert state, stomach acid secretion will increase. 2, the influence of food: such as eating too acidic, too sweet, too oily, spicy, raw and cold food, as well as eating strong tea, coffee, alcohol and other beverages, can induce large secretion of gastric acid, leading to fever in the stomach. 3, stress: because of severe trauma, major surgery, multi-organ failure, major mental shock and other stress reactions, can also lead to increased secretion of gastric acid, gastric mucosal damage, and even erosion and bleeding. 4, acute and chronic gastrointestinal diseases: such as acute and chronic gastritis, gastroduodenal ulcer, gastroesophageal reflux disease, etc., can cause gastric acid secretion. When there is much acid secretion, heartburn and acid reflux in the stomach, the trigger should be removed first and proton pump inhibitors, gastric mucosa protectors and gastric motility drugs should be given as a comprehensive treatment. In daily life, it is important to eat warm, soft, light and easily digestible food, eat little and often, and exercise appropriately to promote recovery.