Check is fine is always coughing, may be physiological reasons such as dry indoor air, long-term smoking, etc., or pathological reasons such as chronic pharyngitis, allergic cough, cough variant asthma, gastroesophageal reflux stimulation, etc. caused. 1. Physiological causes: if the indoor air is too dry, it may dry the mucous membrane of the respiratory tract, and the symptoms of dry and itchy throat may induce cough; smoking can stimulate the mucous membrane of the throat and bronchial tubes, which may lead to cough all the time. 2. Pathological causes: chronic pharyngitis patients due to repeated stimulation of pathogens, there may be frequent coughing symptoms; long-term in the environment with allergens, there may be frequent coughing. As well as cough variant asthma, gastroesophageal reflux stimulation can appear cough symptoms. It is recommended that those who are fine with coughing all the time pay attention to air humidity, avoid smoking, avoid contact with dust and other substances that may irritate the throat, and test for and stay away from allergens. At the same time need to further consultation, under the guidance of the physician to further improve the relevant examination, clear cause after active treatment.