The invention discloses a feed for mature commercial pigs. The feed is prepared from the following components: corn, bran, broken rice, rapeseed meal, cottonseed meal, vinasse, casing powder, silkworm chrysalis powder, fish meal, mushroom, an antioxidant, decavitamin, a composite multi-mineral, and a core additive. The core additive is prepared from the following components: aloe, nutmeg, astragalus root, eucommia ulmoides, acanthopanax senticosus, dodder, panax notoginseng, and rhodiola rosea. The feed for the mature commercial pigs can provide basic nutrients for the mature commercial pigs; at the same time, with the addition of the core additive, the feed can ensure the commercial pigs to keep meat taste in a mature period, can avoid aging of mature pork, can also increase own immunity of the mature commercial pigs, and has the advantages of high security, wide raw material sources and low price.