The invention discloses a feed composite for disease resistance and weight gaining of live pigs. The feed composition is characterized by comprising the following components in parts by weight: 8-12 parts of water chestnut leaves, 4-6 parts of lotus leaves, 4-6 parts of peanut leaves, 4-6 parts of pine nuts, 2-4 parts of fish scales, 1-3 parts of chestnut shells, 4-6 parts of bacillus subtilis, 2-4 parts of edible salt, 1-3 parts of baking soda, 4-6 parts of red kojic rice, 2-4 parts of rice hulls, 4-6 parts of sorghum roots, 4-6 parts of organic original liquid, 1-3 parts of watermelon peels, 1-3 parts of chickpeas, 4-6 parts of corn, 1-3 parts of yams, 1-3 parts of vinasse, 3-5 parts of liquorice, 1-3 parts of collagen powder, 1-3 parts of wheat protein powder, 1-3 parts of saffron crocus, 1-3 parts of wheat bran, 1-3 parts of radix paeoniae alba, 1-3 parts of caulis spatholobi and 1-3 parts of leaves of asparagus lettuce. The feed composition disclosed by the invention is reasonable in component ratio and rich in nutrients; after being fed with the feed disclosed by the invention for a long time, the live pigs can generate antibody to germs in vivo, so the survival rate of the live pigs is increased; after the live pigs are fed with the feed, the meat is good in quality, the fattening condition is good, the slaughter quantity is increased, the live pigs grow rapidly and are slaughtered early, and feed investment is reduced.