The invention provides a traditional Chinese medicine feed additive capable of shortening the labor stage of sows and a preparation method of the traditional Chinese medicine feed additive, and specifically relates to the technical field of breeding of pigs. The traditional Chinese medicine feed additive capable of shortening labor stage of sows comprises the following components of radix angelicae sinensis, radix paeoniae rubra, motherwort, ligusticum wallichii, caulis spatholobi, radix astragali, fructus aurantii, dried orange peel, rheum officinale, akebia stems, licorice roots, probiotics,fish meal, parched soybean powder and white granulated sugar. The preparation method comprises the following steps of S1, carefully choosing traditional Chinese medicine materials, and weighing the radix angelicae sinensis, the radix paeoniae rubra, the motherwort, the ligusticum wallichii, the caulis spatholobi, the radix astragali, the fructus aurantii, the dried orange peel, the rheum officinale, the akebia stems and the licorice roots in corresponding parts; S2, performing primary crushing: mixing the weighed traditional Chinese medicine materials, and performing primary crushing; S3, performing superfine crushing: performing superfine crushing on a mixture obtained after the primary crushing; and S4, adding the probiotics, the fish meal, the parched soybean powder and the white granulated sugar in corresponding parts to a product obtained through superfine crushing, and performing uniform mixing so as to obtain finished products. The traditional Chinese medicine feed additive disclosed by the invention has the advantages that the traditional Chinese medicine feed additive is simple to prepare, the components of the traditional Chinese medicine feed additive are natural Chinese herbal medicines, and the traditional Chinese medicine feed additive is free from toxic or side effects.