The present invention discloses a nutrient powder suing coarse cereals comprising: millet, glutinous millet, rice-gruel, red bean, oat as raw materials, wherein the processing technology comprising removing impurities and skins of the millet, glutinous millet, rice-gruel, red bean and oat, aging by dry method, smashing the cured coarse cereals to mix and stir,, sterilizing at low temperature andpackaging. The nutrient powder is characterized by rational mixture ratio, balanced nutrient composition, and scientific processing technology, wherein the red bean is matched with the millet, glutinous millet and rice-gruel in which the defect of lack in lysine is made up to complement nutrition, moreover, because of using the dry method to heat, the natural nutrient components in the millet, glutinous millet, rice-gruel are effectively protected with the functions of swelling and sterilizing. The foods processed by low-temperature sterilization and microwave can keep more nutrient components and flavours of colour, fragrance and taste, and the swelling function makes the nutrient powder fresh, fragrant, sticky, and sweet with good taste and absorption.