The invention discloses a 23-ingredient ultramicro egg, milk, fruit, vegetable, and cereal powder with a reasonable formula, energy and amino acid composition. The powder is composed of the following components in parts by weight: 3.5 parts of egg powder, 6.2 parts of whole milk powder, 3 parts of chicken liver, 5 parts of fresh oyster, 4.4 parts of white hyacinth bean, 5 parts of soybean meal, 5 parts of soybean flour, 10 parts of black rice, 4.8 parts of millet, 4.8 parts of buckwheat, 3.5 parts of seed of Job's tears, 3.4 parts of wheat bran, 3.5 parts of rice bran, 11.6 parts of sweet potato sheet, 5 parts of konjak fine flour, 4.5 parts of dry red date, 10.3 parts of chestnut kernel, 8 parts of lotus root flour, 24.2 parts of clover, 4.5 parts of rapeseed oil, 2 parts of licorice, 2.8 parts of fructo-oligosaccharide, and 0.2 part of stevia sugar. The powder can simultaneously meet the suggested proper value of diet energy and amino acid composition of World Health Organization (WHO) and the reasonable suggested value of food composition of "Chinese Resident Dietary Guideline 2007". Moreover, medicine-food homology materials are adopted as the raw materials, probiotics fructo-oligosaccharide is also added, so the powder contains more healthy factors.