The invention discloses high-performance environment protective ostrich feed and a preparation method thereof. Earthworm meal, snail meal, housefly larva meal and yeast and other materials replace fish meal, meat and bone meal and other protein materials, peanut meal replaces soybean meal, side crops, such as cassava meal, replaces grain staple food, such as corn, wheat and the like, the polypeptide substance in the housefly larva meal, enzyme in the snail meal, enzyme complex in the multifunctional plasminogen activator, the flora of microbial probiotics, which restrain pathogenic bacteria and have other mechanism, replace chemical growth hormone and chemical drug antibiotic, and the raw materials are prepared into feed for adult ostrich and young ostrich. The feed is characterized in that the feed comprises the following raw materials according to part by weight: 30 to 60 parts of detoxicated cassava meal, 5 to 15 parts of earthworm meal, 5 to 20 parts of snail meal, 2 to 10 parts of housefly larva meal, 6 to 20 parts of yeast powder, 5 to 10 parts of peanut meal, 1 to 4 parts of garlic meal, 1 to 4 parts of mineral trace element, 2 to 5 parts of various amino acids, 0.5 to 2 parts of lecithin, 0.5 to 2 parts of various vitamins, 0.5 to 3 parts of multifunctional plasminogen activator, and 0.5 to 3 parts of microbial probiotics. The invention has the advantages that the quality of the feed is improved, the production cost is reduced, and the safety probability of the cultivated food is enhanced.