Stomach acidity and stomach pain are commonly caused by the following conditions: 1, organic diseases: such as chronic gastritis, acute gastritis, gastroduodenal ulcer, gastroesophageal reflux disease, gastric cancer and many other diseases, gastroscopy should be carried out to give the appropriate treatment for different causes. 2, irregular diet: frequent overeating, eating cold, spicy, greasy food, staying up late, too tired, alcohol abuse and taking certain drugs and other aspects of the influence. . 3, gastrointestinal neurosis: this type of mental illness can cause gastrointestinal symptoms. Learn to reduce stress in daily life, avoid raw, cold, hard and spicy, stimulating food intake, avoid overeating, give warm, soft, light, easy to digest food, eat less and more, chew and swallow slowly to promote physical recovery.