The invention discloses a feed additive for local pigs. The feed additive is prepared from, by weight, 2-4 parts of radix codonopsis, 4-6 parts of folium perillae, 3-5 parts of cyrtomium rhizomes, 5-7 parts of folium artemisiae argyi, 2-4 parts of ganoderma lucidum, 4-6 parts of selenomethionine, 4-6 parts of monocalcium phosphate, 4-6 parts of ferrous gluconate, 4-6 parts of zinc gluconate, 4-6 parts of magnesium sulfate, 9-11 parts of nutgrass flatsedge, 8-10 parts of radix asteris, 8-10 parts of common lophatherum herb, 6-8 parts of conyza bonariensis, 6-8 parts of radix ilicis asprellae, 1-2 parts of a bifidobacterium microbial agent, 0.6-0.8 part of vitamin E and 0.4-0.6 part of ferric citrate. Pigs fed on feed adopting the additive are high in pure pork rate, little in fat, good in pork quality and high in slaughtering speed, the slaughtering time is about 2 months ahead of that of native pigs, and then the pork yield is greatly increased. Pork is bright red in color, mellow and full, clear in marble texture and good in fat precipitation ratio, lean pork is tender, smooth and not blunt, fatty pork is mellow and not greasy, the taste is delicious, and the mouthfeel is pure.