Problem analysis: Sanzi Yangqin decoction is a prescription with the functions of reducing qi, promoting digestion, warming and resolving phlegm, which is used for the symptoms of deficiency asthma, cough and phlegm retention in the elderly. Guidance: It is recommended not to take it for a long time. Cough and excessive phlegm caused by cold can be treated with expectorant cough and antibiotics. Diet is light, avoid greasy and spicy. Drink more water. , have more rest.