The invention discloses special feed for improving the growth speed of Boer goat and preparation method thereof. The feed comprises the following raw materials: corn, wheat bran, bean pulp, green hay,silo corn, peanut vine, Chinese chestnut leaves, seasame cake, peanut cake, a Chinese herbal medicine additive, stone powder, chitosan oligosaccharide, selenium-rich yeast powder, urea phosphate, common salt, trace elements, multi-vitamin preparation and compound microorganism. The feed can effectively improve the growth speed of Boer goat, enhance the immunity of the Boer goat, and shorten the growth cycle, and has the advantages of wide source, low cost and high conversion rate.