NOVELTY - Preparation of livestock and poultry feed comprises obtaining biodegradable restaurant-kitchen garbage; pressing and separating solid and liquid to obtain solid isolate and liquid isolate; adding bran, corn powder and bran powder to solid isolate to obtain mixed material containing water; adding compound strain, which is G. tropicalis (CGMCC.4201) and Lactococcus lactis (CGMCC.4202) to mixed material and fermenting; and drying the mixture, cooling and packaging.    USE - Method for preparing livestock and poultry feed.    ADVANTAGE - The method inhibits the putrefying bacteria in the restaurant-kitchen garbage from growing and pathogenic microorganism from reproducing, which has good refreshing effect and sensory quality and improves the protein content of the product. It has low equipment cost, small energy consumption, high production efficiency, and good environment protection.    DETAILED DESCRIPTION - Preparation of livestock and poultry feed comprises: (A) selecting collected restaurant-kitchen garbage by a wet selector to remove plastic, glass, metal and wood substance to obtain biodegradable restaurant-kitchen garbage; (B) conveying biodegradable restaurant-kitchen garbage to a screw press and separating the solid and liquid to obtain solid isolate and liquid isolate; (C) adding 15-25% bran, 15-25% corn powder and 5-10% bran powder to solid isolate based on the solid isolate in step (B) to obtain a mixed material containing 50-60% of water; (D) adding a compound strain to the mixed material based on 8-20% of inoculum size and fermenting for 1-6 days at 20-40 degrees C; where the compound strain is G. tropicalis (CGMCC.4201) and Lactococcus lactis (CGMCC.4202) mixed at a ratio of 0.5-2: 1; and (E) drying the mixture in step (D), cooling and packaging to obtain livestock and poultry feed containing less than 12% of water. An INDEPENDENT CLAIM is included for a processing system for preparing livestock and poultry feed.    DESCRIPTION OF DRAWING(S) - The drawing is a block diagram of a method used for preparation of livestock and poultry feed (Drawing includes non-English language text).