In the morning, the throat can be considered to be too dry mucous membrane of the throat or chronic laryngitis, and cold and flu may also trigger such phenomena. 1. Dry mucous membrane of the throat: If the environment is too dry during sleep and the water on the surface of the mucous membrane of the throat evaporates, it will lead to hoarseness after waking up, and generally need to be hydrated in time to alleviate the situation. 2. Chronic laryngitis: can also lead to hoarseness after waking up. Chronic laryngitis itself can lead to congestion or localized swelling of the mucous membrane of the throat, thus causing hoarseness. 3. Colds: Sleeping at night with a cold and flu can lead to congestion of the mucous membrane of the throat, which in turn causes hoarseness or pain in the throat. When you get up in the morning and have a hoarse throat, you can drink a small amount of water and seek medical attention to determine the cause of the illness.