There are many reasons for the old tickling throat cough, such as laryngitis, bronchitis, bronchial asthma and so on. 1. Chronic laryngitis: respiratory infections and long-term preference for spicy and stimulating foods, smoking and drinking can cause laryngitis, the disease can show irritating cough, throat discomfort and other phenomena, thus showing the old tickle throat cough. 2. Bronchitis: bronchial tubes are infected by pathogenic microorganisms, which can cause bronchial inflammation, resulting in coughing, coughing up phlegm and other phenomena, which can show a tickle in the throat and old cough, and even cause fever. 3. Bronchial asthma: a heterogeneous disease characterized by chronic airway inflammation, with a history of respiratory symptoms such as wheezing, shortness of breath, chest tightness, cough and scratchy throat. Itchy throat old cough, there may be upper airway cough syndrome, allergic pharyngolaryngitis, reflux pharyngolaryngitis, etc., after the symptoms are recommended to go to the hospital in a timely manner to improve the examination, in accordance with the doctor’s instructions to take standardized treatment, do not ignore the symptoms, take it lightly.