Stomach pain patients prone to dry mouth at night is not normal, stomach pain at night, prone to dry mouth, may be related to sleeping room air dryness, chronic gastritis, gastric ulcer and other gastrointestinal diseases, diabetes and other diseases. 1. Dry air in the bedroom: if the climate, the air is dry, or the air conditioner is open for too long or the heating is too hot, resulting in dry air in the sleeping environment, stomach pain patients are prone to dry mouth at night. 2. Gastrointestinal diseases: if chronic gastritis, gastric ulcer, dyspepsia, gastroenteritis patients usually do not pay attention to diet, eat spicy stimulating indigestible food, stimulate the mucous membrane of the stomach wall, the food stagnation in the stomach, resulting in abdominal distension and stomach pain, the phenomenon of dry mouth. 3. Diabetes: If the patient with stomach pain often have dry mouth at night, and at the same time, the amount of food increases, often have a feeling of hunger, weight loss, urination and other manifestations, it may be accompanied by the condition of diabetes. Gastroparesis patients easy to dry mouth at night belongs to the abnormal phenomenon, should not take a chance, if necessary, timely consultation to clarify the cause of the disease, to avoid adverse consequences.