NOVELTY - Biogas residue containing chicken feed comprises 17-37.5% component A and component B. The component A comprises biogas residue, radix astragali residue, Perilla, folium cortex eucommiae, purslane and premix, where the biogas residue is prepared by fermenting cassava or sweet potato by anaerobic fermentation and mechanically extruding the fermented product with water, performing aeration to obtain dried product and crushing the air dried product. The component B comprises corn, soybean meal, calcium hydrophosphate, maifan stone powder and salt.    USE - As biogas residue containing chicken feed (claimed).    ADVANTAGE - The feed contains scientific formulation and abundant nutrition, improves immunization capability of chickens, prevents various diseases or infection while breeding process and reduces usage of medicine.    DETAILED DESCRIPTION - Biogas residue containing chicken feed comprises 17-37.5% component A and component B. The component A comprises 20-50 pts. wt. biogas residue, 15-28 pts. wt. radix astragali residue, 3-6 pts. wt. Perilla, 4-8 pts. wt. folium cortex eucommiae, 3-8 pts. wt. purslane and 1-2 pts. wt. premix, where the biogas residue is prepared by fermenting cassava or sweet potato by anaerobic fermentation and mechanically extruding the fermented product with water, performing aeration to obtain dried product and crushing the air dried product. The component B comprises 48-52 pts. wt. corn, 10-12 pts. wt. soybean meal, 1.2-1.5 pts. wt. calcium hydrophosphate, 1.2-1.3 pts. wt. maifan stone powder and 0.1-0.3 pts. wt. salt. An INDEPENPURSLANE CLAIM is included for preparation of the biogas residue, which involves (a) crushing Perilla, folium cortex eucommiae and purslane to a particle size of below 10 mm and drying the crushed raw materials until the moisture content reaches less than 12%; (b) mixing the dried raw materials with obtained biogas residue to obtain component A; and (c) mixing the obtained component A with component B to obtain the product.