The invention relates to nutrient coarse cereal food. The food is prepared from, by weight, 100-120 parts of buckwheat powder, 3-5 parts of maltitol, 2-4 parts of lemon juice, 1-4 parts of hericium erinaceus powder, 1-4 parts of walnut powder, 1-4 parts of semen sesami nigrum powder, 5-7 parts of medicated leaven, 3-6 parts of semen cuscutae, 1-3 parts of dendrobium, 1-3 parts of endothelium corneum gigeriae galli, 5-7 parts of fructus crataegi and 3-5 parts of malt. The nutrient coarse cereal food is easy to eat, can be brewed by boiled water, is good in taste and rich in nutrition, and has the healthcare functions of tonifying the spleen and stimulating appetite, promoting digestion, and benefiting the brain and developing intelligence.