Blood glucose is not high and the tongue is still dry, considering that it may be caused by physiological factors, but also may be caused by dry syndrome, uremia and other disease factors. 1. Physiological factors: insufficient daily water intake, or exercise consumes too much water, which can lead to dry tongue; hot weather or in the northern part of the country where the climate is drier, there will also be dry tongue, which can be relieved by replenishing water. 2. Disease factors: such as dry syndrome, oral cavity, nasal cavity, eyes and other parts of the mucous membrane secretion is reduced, there can be a dry mouth, dry eyes and other conditions; such as uremia, there are obvious symptoms of dry mouth, drinking, urination, and some are also accompanied by intermittent fever, excitement and other symptoms. There are many reasons why blood sugar is not high and the tongue is still dry. If the condition persists without relief, it is recommended to go to the hospital for consultation.