Throat acidity should refer to acid reflux symptoms, mainly due to gastric emptying disorder or lower esophageal sphincter dysfunction, in addition to dietary habits. Acid reflux is a common clinical symptom of the digestive system, often accompanied by belching (hiccups), poor appetite (poor appetite), abdominal pain, etc. Acid reflux symptoms are most often associated with digestive system diseases. When gastric emptying is impaired, such as after major gastrectomy and vagus nerve injury, a large amount of secreted gastric acid refluxes, resulting in acid reflux symptoms. When the lower esophageal sphincter dysfunction disease appears, such as gastroesophageal reflux disease, when the pressure inside the stomach increases, the stomach acid refluxes into the throat and thus acid reflux symptoms appear. In addition, the symptoms of acid reflux can also occur when preferring stimulating foods and eating too much. When acid reflux occurs, it is important to seek prompt medical attention and further examination of the cause under the advice of a doctor to avoid delay in treatment.