Biogas residue-containing formula feed for chicken is formed by mixing a component A and a component B. The component A is formed by mixing the following raw materials: a biogas residue, an astragalus residue, Caulis perillae, Eucommia ulmoides, pigweed, and a premixture. The biogas residue is the resultant obtained after anaerobic fermentation of an alcohol-making mixture using cassava or sweet potatoes as raw materials for fermentation, and the resultant is dewatered by adopting mechanical extrusion, exposed in the sun and dried, and then ground by a grinder. The component B is formed by mixing the following raw materials: maize, soybean meal, dicalcium phosphate, calcium carbonate, and table salt.
