Dry mouth and tongue blood sugar is a little high may be due to pre-diabetes, to diet and exercise control is the main; if the blood sugar is high to the diagnostic criteria for diabetes, it is necessary to add medication. Typical symptoms of diabetes mainly include “three more and one less” performance, that is, more drink, more food, more urine, weight loss, but also can show dry mouth, fatigue, sleepiness, mental depression and other non-specific symptoms. If the blood sugar is a little high, it may be due to pre-diabetes, diet and exercise control is the main; if the blood sugar is high to the diagnostic criteria for diabetes, it is necessary to add medication, such as metformin, acarbose and other oral hypoglycemic drugs, or insulin injection therapy. If the patient appears dry mouth and tongue blood sugar is a little high situation, need to consult a doctor in time, improve the relevant examination, clear diagnosis and treatment.