Drinking a lot of water or still feel thirsty, generally consider the following two reasons: First, it may be caused by the patient’s usual life does not pay attention to oral hygiene, oral cleaning is not in place. Second, it may be caused by diseases in the body, such as endocrine diseases such as diabetes. For the above two points, it is recommended that patients first go to the hospital to consult a professional doctor to determine whether it is caused by internal diseases. In ordinary life, you must pay attention to oral hygiene, brush your teeth and rinse your mouth in time after meals, and avoid eating some spicy and stimulating foods in your diet.