Stomach acid reflux is commonly caused by the following four aspects, including psycho-spiritual effects, dietary effects, stress reactions, acute and chronic gastrointestinal diseases, etc., as follows: First, psycho-spiritual effects: long-term high pressure, and depression, insomnia, anxiety, will cause a large amount of gastric acid secretion, causing acid reflux, burning and other discomfort; second, dietary effects: when eating too sweet, too acidic, too oily, too spicy food, as well as strong tea, coffee, alcohol and other stimuli, will cause a large secretion of gastric acid; third, stress: multi-organ failure in a state of stress, as well as major mental shock, trauma, will also cause a large secretion of gastric acid, inducing gastric ulcers and even bleeding; fourth, acute and chronic gastrointestinal diseases: such as gastroesophageal reflux disease, as well as gastric cancer and peptic ulcer, will cause increased secretion of gastric acid and aggravate the damage of gastric mucosa. When patients have increased secretion of gastric acid, they should be given drugs to inhibit gastric acid, drugs to protect gastric mucosa and drugs to promote gastric motive force for treatment. Patients are advised to have a light, easily digestible liquid or semi-liquid diet, avoid cold, spicy, greasy and other undesirable stimuli, do not overeat, eat less and eat more to promote the recovery of the disease.