Dry throat need to be alert to diseases such as chronic laryngitis, chronic tonsillitis, dry syndrome, diabetes, etc., should be promptly consulted to identify the cause of the disease. 1. Chronic pharyngitis: chronic inflammation of the mucous membrane of the throat, lymphatic tissue, will show dryness of the throat, burning sensation, especially after a long time of talking is more obvious, sometimes accompanied by pharyngeal foreign body sensation. 2. Chronic tonsillitis: chronic tonsillitis has symptoms such as dry throat, itching, foreign body sensation and irritating cough. 3. Dry syndrome: mainly autoimmune chronic inflammation with reduced glandular secretion as the main cause, there is dryness in the throat, and it is often necessary to take it with water while eating food, and sometimes it is necessary to drink water for many times at night, accompanied by ulcers in the mouth and other uncomfortable symptoms. 4. Diabetes mellitus: some patients have significantly higher than normal blood glucose, and do not control the diet, metabolic abnormalities, due to osmotic diuresis leading to polyuria, followed by dry throat, frequent drinking of water, polyphagia, weight loss and other uncomfortable symptoms. Dry throat symptoms, it is recommended to go to the hospital, after the diagnosis is clear need to be treated under the guidance of a professional doctor.