There are many causes of dry mouth and bitter mouth, such as dental caries, dental calculus, gastroesophageal reflux, etc. Acid reflux, heartburn, farting and burping are considered to be indigestion caused by gastric diseases. Dry mouth and bitter mouth is mostly seen in oral diseases, which can destroy the internal environment of the oral cavity and cause inflammation in the oral cavity; gastrointestinal diseases such as gastric ulcers, gastroesophageal reflux due to gastrointestinal dysfunction can cause this situation; metabolic diseases such as diabetes, diabetes, three more than one more than one more than drinking more than urination, thinning may also cause dry mouth and bitter mouth this symptom. Acid reflux, heartburn, farting and burping are mostly seen in gastric diseases, such as gastritis, reflux esophagitis, indigestion, gastrointestinal disorders, etc. After the disease, patients will experience abdominal discomfort, nausea, heartburn, bloating, farting and burping. Among them, people with gastroesophageal reflux disease (GERD) can have acid reflux, heartburn, hiccups, and common manifestations such as bitter taste in the mouth, etc. It is recommended that the patient first consult the gastroenterology department to improve gastroenteroscopy, to clarify whether there is GERD and other conditions. It is recommended to go to the regular hospital for examination, after the cause of the disease is clearly targeted to choose the appropriate drug treatment, do not use drugs to avoid causing adverse effects.