If the patient has a cough and coughs white foamy sputum, it is mainly considered to be caused by respiratory tract infections, more commonly due to viral infections, which need to be actively treated with antiviral drugs and cough suppressing and phlegm relieving drugs. If there are positive antibodies to mycoplasma, azithromycin is needed, followed by drugs such as snake bile and Sichuan shellfish liquid, acute syrup, and aminoglutethimide granules, and in general, attention to diet and rest is also needed. In the opinion of TCM practitioners, this cough is mostly caused by wind-cold cold, and can be treated with oral medications such as wind-cold cold granules, cold and sparse wind granules, and also Tongxuan lung pills.