Summary of the experience of Professor FANG Bangjiang in acute treating chronic obstructive pulmonary disease（AECOPD）. He emphasizes that it is important to reduce phlegm， remove blood stasis and relieve asthma based on Kuanxionglifei theory， use couplet medicines； treat cough and asthma disease in old people via regulating Yang Ming； internal and external therapy（purging lung and expert large intestine）. Treatment with combination of traditional Chinese and Western medicine， the effect is is very good.