There are many reasons for dry throat while sleeping, such as dry indoor air, nasal diseases, throat diseases, gastrointestinal diseases and other reasons. 1. Dry indoor air: dry indoor air, air humidity is poor, inhalation of dry air will cause irritation to the throat, causing symptoms of dry throat in bed. 2. Nasal diseases: various types of rhinitis, sinusitis causes congestion and swelling of the nasal mucosa, causing nasal congestion, which leads to breathing through the mouth, thus leading to the symptoms of dry throat in bed. 3. Pharyngeal diseases: such as acute and chronic pharyngitis, tonsillitis, herpes pharyngitis and other pharyngeal diseases, can also cause swelling of the mucous membrane of the throat, secretion abnormalities, which may lead to sleep throat dryness. 4. Gastrointestinal diseases: common bile reflux gastritis, gastroesophageal reflux disease, etc., resulting in gastric acid reflux stimulation of the pharynx can also lead to sleep throat dryness. Sleeping dry throat, there may be other reasons, it is recommended to go to the hospital in a timely manner to check, follow the doctor’s instructions for treatment.