Adults with a dry cough without sputum, if it occurs frequently, are likely to have cough variant asthma and need to go to the hospital for a bronchodilator test or bronchial provocation test. If the test result is positive, the cough is caused by cough variant asthma and there is no sputum, so it is necessary to use anti-asthma medication for long-term treatment, such as chewing a chewable tablet of montelukast sodium before going to bed, and inhaling Symbicort for a long time to relieve the symptoms of dry cough and no sputum. There is also a possible cause of inflammation of the throat, often accompanied by hoarseness or dry throat, sore throat, itchy throat symptoms, the use of anti-inflammatory drugs can effectively relieve the symptoms of dry cough without phlegm, it is recommended that the oral anti-inflammatory oral solution of Pu Di Lan or oral solution of Blue Baicalin, the effect is better. In addition, if bronchitis or pneumonia is caused by Mycoplasma pneumoniae infection, dry cough without sputum may also occur, and intravenous drip azithromycin is needed for treatment.