The invention discloses a traditional Chinese medicinal composition for treating asthma. The traditional Chinese medicinal composition comprises elaeagnus conferta, lotus corniculatus, morinda parvifolia, lindera megaphylla, calabash-shaped leaves, thyme, sansevieria trifasciata, gentiana purdomii marq, cymbidium orchid, melilotus officinalis, and heliotropium indicum. The invention discloses a preparation method for the traditional Chinese medicinal composition. The traditional Chinese medicinal composition for treating the asthma has the advantages of good treatment effect, low cost, high cure rate, no adverse reaction and the like. The traditional Chinese medicinal composition disclosed by the invention has the effects of clearing heat, detoxifying, astringing the lung, nourishing the kidney, activating blood circulation, promoting the circulation of qi, tonifying qi, strengthening middle warmer and expelling phlegm to arrest coughing, and can recover vital energy and avoid the recurrence of the asthma.