The invention relates to the technical field of breeding and in particular relates to special feed for growing and fattening pigs and a preparation method of the feed. The feed comprises the following raw materials in parts by weight: corn gluten meal, shell powder, bran, sesame-seed cake, calcium powder, bean pulp, tree powder, VC, lilac, oldenlandia diffusa, hyacinth bean, glossy privet fruit, Chinese yam, acanthopanax, selfheal, radix stephaniae tetrandrae, cornu bubali, folia perillae acutae, the root of Chinese pulsatilla, cape jasmine, sweet wormwood, inula flower, immature bitter orange, notopterygium root, platycodon grandiflorum, fresh ginger, an acidifying agent, zymocyte and functional amino acids. According to the feed, due to reasonable feed proportioning and with the adoption of a Chinese herbal medicine feeding manner, the feed nutrition can be well absorbed by pigs, so that rapid growth of the pigs is guaranteed, health indexes of pork are effectively improved, the bred pork is superior in quality, excellent in taste and high in nutritive value, and the requirement on high-quality and high-nutrition pork in the conventional market is met.