The invention discloses a feed additive capable of improving the breeding capability of breeding pigs of Min pigs as well as a preparation method and application of the feed additive, and belongs to the field of preparation of feed additives. The invention discloses the feed additive capable of improving the breeding capability of breeding pigs. The feed additive comprises the following components: radix morindae officinalis, radix polygoni multiflori, russian boschnai aki herb, cinnamon bark, cloves, barley malt and EM bacterial liquid. The invention further discloses the method for preparing the feed additive. The method comprises the following steps of: (1) according to the proportion, weighing the radix morindae officinalis, the radix polygoni multiflori, the cinnamon bark, the cloves, the russian boschnai aki herb and the barley malt, drying, and crushing; and (2) adding water and the EM bacterial liquid, uniformly mixing the crushed traditional Chinese medicine with the water and the EM bacterial liquid so as to obtain a mixture, fermenting the mixture, drying the fermented mixture, and crushing the dried mixture so as to obtain the feed additive. The feed additive provided by the invention is rich in nutrition and good in palatability, and can improve the breeding function of the breeding pigs of the Min pigs, so that the conception rate of sows is increased, the breeding effect is good, produced piggies grow and develop normally, the raw material sources are rich, the preparation cost is low, and the feed additive is suitable for industrialized production.