GERD can be determined by 24-hour esophageal PH monitoring and gastroscopy. Typical symptoms of GERD are reflux, heartburn, and also belching (burping), chest pain, painful swallowing, and dysphagia. It can be diagnosed clinically by 24-hour esophageal pH monitoring, gastroscopy, barium esophagography, esophageal manometry and other tests, and pathologic biopsy if necessary, but the gold standard is 24-hour esophageal pH monitoring. Causes of GERD include physiological factors such as obesity, vomiting, pregnancy, and weight-bearing labor, and pathological factors such as constipation, abdominal effusion, esophageal hiatal hernia, and postoperative pancreatic achalasia, all of which can result in increased intra-abdominal pressure, which can lead to GERD if prolonged intra-gastric pressure is increased. If the patient is diagnosed with GERD, it is recommended to go to a regular hospital in time, to clarify the cause of the disease, and then to carry out targeted treatment under the guidance of the doctor, in order to reduce the adverse effects of the disease.