A provided medicine for treating chronic obstructive pulmonary disease at a stable phase comprises the bulk drugs: radix codonopsis, Chinese yam, radix asteris, semen lepidii, radix et caulis acanthopanacis senticosi, herba epimedii, pubescent holly root, rhizoma cynanchi stauntonii, herba Inulae, herba schizonepetae, radix angelicae dahuricae, cacumen tamaricis, fructus corni, radix scrophulariae, thallus laminariae, caulis bambusae in taenia, caulis spatholobi, Chinese caterpillar fungus, semen sesami nigrum, semen euryales, radix rehmanniae preparata, littleleaf Indianmulberry herb, semen armeniacae amarum, rhizoma pinelliae preparatum, herba cistanches, ziziphus jujube, pericarpium citri reticulatae, fructus toosendan, calyx kaki, stigma croci, lignum sappan, leucas mollissima and ligusticum wallichii. The medicine is capable of improving the symptoms of cough, asthma and phlegm of a patient attacked by chronic obstructive pulmonary disease, improving the body immunity of the patient, promoting restoration and regeneration of respiratory mucosa damaged epithelium, thoroughly preventing attack or reducing acute attack frequency, mitigating attack symptoms and respiratory muscle fatigue and dystrophia state, alleviating progressive decrease of pulmonary functions, controlling developing of disease state, improving life quality and reducing morality rate.