Gastric reflux has the potential to cause acid reflux from the stomach to surge into the mouth. Gastric reflux is a pathological phenomenon in which stomach acid is secreted and then not emptied in time with food, but refluxes through the stomach and esophagus into the throat or mouth, causing acid reflux, belching, and other uncomfortable symptoms. Therefore, gastric reflux may cause the acid in the stomach to reflux into the mouth. Gastric reflux is associated with poor gastrointestinal motility, indigestion, inflammation within the gastrointestinal tract, tumors, and other diseases. If gastric reflux occurs frequently, it is necessary to go to the gastroenterology department of regular hospitals in a timely manner, improve the corresponding auxiliary examination, clarify the cause of the disease under the guidance of a professional physician, and follow the doctor’s instructions to take appropriate treatment measures.