Itchy throat and dry cough are often caused by chronic inflammation of the mucous membrane of the throat. This often occurs in the late stage of cold or inflammation of the trachea or bronchus, and chronic congestion and dryness of the mucous membrane of the throat may cause itchy throat and dry cough. In addition, some patients may also have a long history of talking or using their voice too much, or when they have a cold or an inflammatory disease of the lower respiratory tract, but their voice is still not well rested, which may lead to similar symptoms. Some patients may also have more smoking, drinking, eating spicy and stimulating diet, exposure to air pollution environment and other influencing factors, and some allergic diseases may exist in the mucous membrane of the throat, all of which may lead to similar symptoms.