Getting up in the morning with dry mouth and throat is common because of high indoor temperature, insufficient drinking water, open-mouth breathing, but also because of certain diseases, such as diabetes, dry syndrome and so on. 1. Getting up in the morning with a dry mouth and a dry throat is mostly caused by sleeping at night, the indoor temperature is too high, the cover is thick, not enough water before going to bed, the body does not replenish water in time. When you sleep at night with your mouth open to breathe, the oral mucosa is dry, and the next morning there will be a dry mouth, dry throat. 2. Wake up in the morning, dry mouth and throat, also seen in some diseases, such as diabetes, when blood sugar is too high, the amount of urination at night increased, the body is not enough hydration, the morning will appear dry mouth, dry throat. When you suffer from dry syndrome, the glands in the mouth do not secrete enough, the oral mucosa is dry, there will be a dry mouth, dry throat. Wake up in the morning dry mouth, dry throat, drink more water can be relieved, if a long time dry mouth, dry throat to the hospital, identify the cause of the disease, timely treatment.