Thirsty throat often occurs due to diabetes, viral colds, vitamin C deficiency, and low indoor humidity. Diabetics can take away more water because glucose is lost from the urine, producing symptoms of irritable thirst due to dehydration. Colds and fever can lead to loss of water through the breath and skin, resulting in a dry, sore throat. Usually eat vegetables and fruits are on the low side, vitamin C is insufficient, affecting the mucous membrane function of the nasopharynx, causing dry throat and thirst. Insufficient indoor humidity, dry air, breathing nasopharynx need to secrete more water, humidification of air, thirst. You can check blood sugar, blood routine, vitamin C level measurement, to exclude diabetes, cold and vitamin C deficiency, dry air can pay attention to indoor humidification, see if it can be improved, adenoid hypertrophy because of poor respiratory patency, open-mouth breathing at night will also have a dry and itchy pharynx and thirst.