The invention discloses a traditional Chinese medicinal preparation for lung cancer postoperative care, and a preparation method thereof, and belongs to the field of traditional Chinese medicines. Raw materials of effective components of the traditional Chinese medicinal preparation comprise Chinese waxgourd seed, Smilax scobinicaulis C.H. Wright, Herb of Chinese Forgetmenot, pericarpium trichosanthis, Chinese Sage Herb, Tenacious Condorvine Stem, Bletilla striata, nutgall, all-grass of Canton Speranskia, Herb of Marginate Rockbell, Chinese yam, Chinese prickly ash, Lobelia sessilifolia Lamb., Japanese balanophora herb, Crotalaria assamica Benth. and Reineckea carnea. The traditional Chinese medicinal preparation has suitable medicinal material compatibility, accords with the traditional Chinese medicine and modern medicine theories, has the efficacies of heat clearing, detoxifying, blood circulation invigorating, stasis dispelling, phlegm reducing, mass resolving, liver coursing, qi rectifying, healthy energy strengthening and deficiency tonifying, and has the advantages of use convenience, good absorption effect, and no adverse or toxic side effects. Clinic verification shows that the traditional Chinese medicinal preparation has extremely good alleviation and treatment effects on the lung cancer post-operation, and is suitable for the lung cancer postoperative clinic treatment and care popularization application.