The specific manifestation of cough variant asthma is cough, oil smoke, dust and other easily induced or aggravated cough, severe cases can be accompanied by chest tightness, wheezing, etc.. 1. Cough: cough variant asthma most in the spring and fall onset, its main manifestation is irritating dry cough or cough a small amount of white mucus sputum, usually more intense, mostly at night or early in the morning cough or aggravation. Cough is easily triggered or aggravated by oil smoke, dust and cold air. 2. Chest tightness, wheezing: cough variant asthma severe patients, in the emergence of severe cough, but also the emergence of chest tightness, wheezing, dyspnea, dyspnea and so on. Patients with the above symptoms should go to the hospital in time to improve the relevant laboratory tests, such as routine blood tests, pulmonary function, etc., and standardized treatment under the guidance of the doctor.