The invention discloses a roaster-used milk powder material, which is formed by mixing and blending popping corn, flour, low egg whey powder, soybean oil, glucose, popping soybean pulp, import steam fish meal, plasma protein powder, natural yeast extract, milk substitute powder, calcium carbonate, calcium hydrophosphate, flavouring agent, acidulant, zinc oxide, roaster microelement premix, threonine, diaminocaproic acid, methionine, choline, roaster multivitamin, antioxidant and mildewproof agent. The preparation process comprises: grinding, popping, secondary grinding, measurement burdening, mixing, packaging and the like. The roaster-used milk powder material in the formula has high nutrition level and balanced amino acid, is rich in food attractant, has good palatability and easy digestive absorption, can effectively substitute breast milk and solves the problem of lack of breast milk; in addition, the roaster-used milk powder material has the advantages of promoting the fast development of the intestinal canal, enhancing the disease resistance and diarrhea resistance, leading to the high neatness of the weaning roaster and the like.