The TCM classification of cough is based on the following points: First, cough with external sensation. External coughs include the following points: 1) wind-cold attacking the lung, consider applying Sanjiao Tang and Stop Loudspeaking for treatment; 2) wind-heat offending the lung, consider applying Mulberry Ju Drink for treatment; 3) wind-dry injuring the lung, consider applying Mulberry Apricot Tang and other treatments. The second point is cough with internal injuries. For cough with internal injuries, it can be divided into the following points: 1) phlegm and dampness in the lung, which should be treated with Er Chen Tang and San Zi Yang Yin Tang; 2) phlegm and heat in the lung, which should be treated with Qing Jin Hua Phlegm Tang; 3) liver fire in the lung, which should be treated with Baicalin Di Bai Tang; 4) lung yin deficiency, which should be treated with Sha Shen Mai Dong Tang. Clinically, for cough, it is necessary to carry out reasonable identification and rational use of medicine under the guidance of a doctor.