Dry throat may be caused by talking too much, drinking too little water, chronic pharyngitis, colds and so on. 1. Talking a lot: talking of may lead to physical stimulation of the mucous membrane of the throat, resulting in localized redness and swelling. Clinically, it is mainly characterized by dryness or foreign body sensation in the throat. 2. Drinking less water: dry throat is very much related to drinking too little water, especially when some people are busy, not only can’t care about drinking water, but also can’t care about going to the toilet. As a result, the body is dehydrated, which causes the symptoms of dry throat. 3. Chronic pharyngitis: because chronic pharyngitis leads to a decrease in the secretion function of the mucous membrane glands in the throat, the secretion is reduced, appearing dry throat, dry mouth situation. 4. Colds: When you have a cold, your respiratory tract will be infected. It is usually accompanied by cough, runny nose, fever and other symptoms, accompanied by dry throat. If the dryness of the pharynx does not continue to improve, you should be alert to diabetes, dry syndrome, sleep apnea and other systemic diseases, and you need to consult a doctor in a timely manner to improve the relevant examinations and standardize the treatment.