The invention discloses whole grain food which is prepared by the following raw materials according to parts by weight: 30-50 parts of corn, 5-10 parts of rice, 5-10 parts of sticky rice, 5-10 parts of black kerneled rice, 5-10 parts of millet, 5-10 parts of glutinous millet, 5-10 parts of soybeans, 5-10 parts of black beans, 5-10 parts of mung beans, 5-10 parts of red beans, 5-10 parts of peas, 5-10 parts of wheat, 5-10 parts of buck wheat, 5-10 parts of barley, 5-10 parts of oats, 5-10 parts of fragrant rice, 5-10 parts of sorghum and 5-10 parts of peanuts. The preparation method is as follows: selecting various raw materials according to composition, puffing or popping after cleaning, then smashing and stirring, and finally vacuum packaging to obtain the whole grain food. The invention is prepared by a plurality of farmhouse eighteen rice whole grain raw materials which are easy to obtain; the invention not only has comprehensive and abundant nutrition, but is also easy to store and convenient to use after being puffed or popped, and has soft and smooth mouthfeel, fragrant and sweet taste, thus being an invention result which is worthy of being promoted vigorously to improve the dietary structure of the whole people and improve human quality at present.