The invention discloses a feed capable of improving libido and semen quality of breeding boars and a preparation method of the feed. The feed is prepared from the following raw materials in parts by weight: 150-180 parts of corn flour, 80-100 parts of black bean flour, 50-70 parts of millet flour, 30-40 parts of green oat, 20-30 parts of green wheat, 5-10 parts of black sesame leaves, 5-10 parts of lily, 30-50 parts of dog kidney, 20-30 parts of mutton, 3-5 parts of ginger powder, 2-4 parts of onion powder, 3-4 parts of salt, 2-3 parts of cooking wine, 20-25 parts of leek, 15-20 parts of kelp, 5-10 parts of carrot, 3-5 parts of thick chilli sauce, 0.3-0.5 part of aconite, 2-3 parts of cinnamon, 2-3 parts of songaria cynomorium herb, 1-2 parts of common curculigo rhizome, 2-3 parts of radix astragalim, 10-15 parts of egg yolk powder, 2-3 parts of actinolite micropowder, 1-2 parts of phosphate ore micropowder, and 10-20 parts of additives. The feed provided by the invention has the advantages of significantly improving the libido of breeding boars, improving the ejaculation volume, increasing the sperm density, improving the sperm survival rate, prolonging the sperm survival time, improving and enhancing the production and reproductive performances of the breeding boars, and prolonging the service life of the breeding boars.