Bronchitis and dry cough occur, which can be relieved by cough suppressants. For example, compound licorice tablets, compound procatoxol oral solution, compound aminoglutethimide oral solution, fenagan cough syrup and cough capsules. In the case of cough variant asthma, this particular type of cough due to bronchial asthma can be combined with cotrimoxazole capsules, paracetamol, cetirizine, loratadine, etc. For dry cough due to mycoplasma and chlamydia infections, macrolides such as roxithromycin, azithromycin, and memantin can be taken.