The invention belongs to the technical field of traditional Chinese medicine composition for treating lumbar spondylosis and preparation method thereof, aiming at solving the technical problems that the traditional Chinese medicine composition for treating lumbar cervical spondylosis is poor in effect and is not beneficial to being taken for a long time in the prior art. The composition comprisesthe following bulk drugs: salted eucommia ulmoides, astragalus membranaceus (fisch.) bunge, angelica sinensis, salted morinda officinalis without core, mulberry twigs, safflowers, tortoise plastron processed with vinegar, fried pericarpium citri reticulatae, incised notopterygium, dipsacus asperoides processed with wine, root of doubleteeth pubescent angelica, ginseng, corydalis tuber processed with vinegar, coix seed, prepared rehmannia root, salted Chinese dodder seeds, pawpaw, cassia twigs, medicinal cyathula root processed with wine, buddleja asiatica lour, Chinese taxillus herb, radix clematidis, desertliving cistanche, Japanese yams, fructus amomi, Chinese wild ginger, Sichuan lovage root processed with wine, pueraria mirifica, scorpion, paniculate swallowwort root, centipede, largeleaf gentian root, semen juglandis, pseudo-ginseng, kalimeris indica ( L.) Sch.-Bip and aspidistra elatior blume. The preparation method comprises the steps of preparing the traditional Chinese medicine into tea bags. The traditional Chinese medicine composition has the characteristics of being good in treatment effect, small in side effect and beneficial to long-term taking.