The invention discloses a rapid fattening feed for black pigs and a preparation method of the rapid fattening feed. The rapid fattening feed is prepared from the following raw materials in parts by weight: 200-250 parts of sunflower seed meal, 40-60 parts of grape seed meal, 70-90 parts of rice wine lees, 220-230 parts of fine corn flour, 50-60 parts of expanded rice bran, 30-40 parts of beef, 60-80 parts of dog meat, 7-9 parts of chili oil, 1-2 parts of bruised ginger, 2-3 parts of oyster sauce, 0.2-0.5 part of nutmeg, 0.2-0.5 part of amomum, 40-50 parts of lemongrass, 50-70 parts of kochia scoparia, 60-70 parts of pseudostellaria heterophylla, 30-50 parts of salsola collina pall, 20-30 parts of boxthorn leaves, 10-15 parts of mint leaves, 15-20 parts of fresh yam, 5-10 parts of coreopsis, 5-8 parts of laver, 20-25 parts of spinach leaves, 3-5 parts of eggs and 2-3 parts of black pig nutrients. The feed is fine in production, safe, rich in nutrition and crispy, and can promote the growth and weight gaining of black pigs, accelerate the growth and fattening of black pigs, improve the pig hair color and the pork quality, increase the lean meat percentage, reduce the fat content in the carcass, and improve the immunocompetence of black pigs. The use ratio of the feed is increased.