The main symptoms of gastroesophageal reflux disease (GERD) include upper abdominal bloating, chest pain, belching, acid reflux, nausea, and vomiting. The chest pain usually occurs in the middle of the line connecting the two nipples, just below the sternum. A gastroscopy can reveal lesions on the mucous membrane of the esophagus, which can be used to diagnose gastroesophageal reflux disease. Depending on the size of the lesions, GERD can be classified into four grades: A, B, C, and D, with Grade A being the mildest and Grade D the most severe. Treatment mainly focuses on promoting gastric motility, repairing the mucous membrane, and acid suppression to protect the stomach. GERD is mainly related to poor gastric motility, so it is also helpful to increase physical activity to enhance gastrointestinal motility and improve gastric function, which can positively affect the recovery from the disease.