The invention discloses a new Chinese medicinal composition for treating pain in waist and lower extremities and a preparation method thereof. The Chinese medicinal composition is mainly prepared from the following raw material medicaments: Chinese angelica, white paeony root, red paeony root, pilose asiabell root, raw astragalus, Szechuan lovage rhizome, safflower, peach seed, glossy privet fruit, prepared rehmannia root, cherokee rose fruit, medlar, parsnip, cassia twig, pubescent angelica root, kudzuvine root, wooly dutchmanspipe herb, beautiful sweetgum fruit, common clubmoss herb, clematis root, acanthopanax bark, obscured homalomena rhizome, spicebush root, dried orange peel, nutgrass galingale rhizome, suberect spatholobus stem, drynaria rhizome, epimedium, malaytea scurfpea fruit, Chinese dodder seed, turtle shell, tortoise plastron and the like. The Chinese medicinal composition can be prepared into any common oral preparation according to a conventional Chinese medicinal preparation method. The Chinese medicinal composition can remarkably improve the symptoms such as pain in waist and lower extremities, psoas discomfort, soreness of waist, leg weakness, generalized weakness, lassitude and the like, and has the advantages of definite clinical curative effect, remarkable curative effect and quick response. The Chinese medicinal composition has low cost and basically has no toxic or side effect.