The invention provides a traditional Chinese medicine reagent for warming lung, eliminating cold, resolving sputum and relieving asthma, comprising blackberry lily, ephedra, dried ginger, asarum, prepared pinellia, michaelmas daisy, schisandra chinensis, coltsfoot flowers, licorice and jujube. The traditional Chinese medicine reagent for warming lung, eliminating cold, resolving sputum and relieving asthma is characterized by being prepared from the following steps of preparing the raw materials according to a ratio, putting into a vessel, soaking with 600-1000ml warm water, then boiling with big fire, changing the big fire into small fire, decocting for 30-45m, removing the vessel from a fire source, closing the fire source, cooling physic liquor in the vessel until the temperature is 25-40 DEG C, filtering the physic liquor with a filter screen, and filtering off dregs. The prepared traditional Chinese medicine reagent is suitable for treating cold asthma attack stage. The invention has the advantages of treating the root cause from symptoms, being warm without hot, relieving dryness, having peace property, being good at discharging lung qi, eliminating phlegm, stopping cough and specially discharging lung.