The invention relates to a piggy premix capable of increasing energy digestibility, as well as a preparation method and application of the piggy premix. The premix comprises the following components in parts by weight: 4-8 parts of lipase, 8-15 parts of lysophospholipid, 6-12 parts of bile acid, 8-15 parts of carbohydrate complex enzymes, 5-10 parts of phytase, 10-20 parts of glutamine and 5-50 parts of carriers. The preparation method comprises the following steps of respectively preparing a mixture A and a mixture B, and then uniformly mixing the mixture A with the mixture B. The premix is added to a piggy feed and is used for improving the energy digestibility of piggies. Compared with the prior art, the premix disclosed by the invention has the advantages that all the components are mutually matched, so that the digestion and the absorption of energy substances of fat, starch and the like in the feed, by the piggies can be increased, the intestinal tract development of the piggies is promoted, the energy digestibility of the piggies is improved, the growing performance of the piggies is improved, and the premix is safe and environmental-friendly.