The term gastroesophageal reflux disease refers to: clinical GERD and esophageal mucosal damage caused by excessive exposure (or exposure) of the gastroesophageal lumen to gastric juices. The occurrence of GERD and its complications is multifactorial. They include defects in the anti-reflux mechanisms of the esophagus itself, such as lower esophageal sphincter dysfunction and abnormal esophageal body movements; and also dysfunction of many mechanical factors outside the esophagus. Typical clinical symptoms of GERD are: 1. heartburn and acid reflux: heartburn is a burning sensation behind the sternum and under the glabella, mostly occurs one hour after meals, and is likely to occur when lying down, bending over or when abdominal pressure increases. 2. Painful swallowing and dysphagia: Painful swallowing can occur when there is severe esophagitis or esophageal ulcer, which is caused by acidic reflux stimulating the sensory nerve endings under the epithelium of the esophagus. Reflux can also stimulate mechanoreceptors to cause spasmodic esophageal pain, which can be severe stabbing pain radiating to the back, waist, shoulders and neck, similar to angina pectoris. Due to esophageal spasm or dysfunction, some patients may have difficulty swallowing, and when esophageal stricture occurs, the difficulty in swallowing continues to worsen. 3, other: regurgitant stimulation of the pharyngeal mucosa can cause pharyngitis, hoarseness, pharyngeal discomfort or foreign body sensation. Inhalation of the respiratory tract can occur cough, asthma, this asthma is not seasonal, often at night paroxysmal cough and shortness of breath. Individual patients have recurrent aspiration pneumonia and even interstitial lung fibrosis. The disease is primarily a functional condition with a high impact on the patient’s subjective perception. Daily life can be prevented and assisted by the following methods: 1, excessive obesity will increase abdominal pressure and contribute to reflux, so the intake of high-fat foods that promote reflux should be avoided and weight should be reduced. 2, eat less and more meals, should not eat within 4 hours before bedtime to minimize the nighttime gastric contents and gastric pressure, if necessary, raise the head of the bed by 10 cm. This is very important for reflux at night when lying flat, using gravity to remove harmful substances in the esophagus. 3, avoid various actions and positions that increase abdominal pressure for a long time in life, including wearing tight clothing and tightening the belt, which helps prevent reflux. 4. Quit smoking and alcohol, and eat less chocolate and coffee.