NOVELTY - Method for biologically treating restaurant and kitchen garbage, involves (a) sorting and pulverizing the restaurant and kitchen garbage and separating oil, (b) anaerobically fermenting the garbage with sorted oil, and storing the methane in gas storing cabin and cleaning the residue, (c) composting the residue by automatic oxygen control method and prilling, drying and packing the finished product, and (d) producing biopesticide using biogas by mixing biogas, rotenone, rice vinegar, capsaicin and Lactobacillus acidophilus and fermenting the mixture.    USE - The method is useful for biologically treating restaurant and kitchen garbage and producing biogas which is used for producing biopesticide and as organic fertilizer.    ADVANTAGE - The method completely utilizes combustible gas, thermal energy and electric energy, enables to recycle garbage, turns harmness to benefit, and biological deodorization can control air pollution.    DETAILED DESCRIPTION - Method for biologically treating restaurant and kitchen garbage, involves (a) sorting and pulverizing the restaurant and kitchen garbage by transporting the garbage to treating plant, sorting the mass which is not easy to be treated like plastic, metal, glass, battery and lighter, pulverizing the garbage using hammering grinder to recycle and separate oil, (b) anaerobically fermenting the garbage with the sorted oil, transferring the sorted oil into methane fermenting pond, mixing the sewage plant sludge, restaurant kitchen garbage and fermenting methane strain in the mass ratio of 100-400:600-900:2-6, sealing the pond for fermenting for 6-12 days, storing the methane in gas storing cabin and cleaning the residue, (c) composting the residue by automatic oxygen control method, processing residue to obtain microbial organic fertilizer, mixing the residue and lactic acid bacteria in the mass ratio of 1000:1-6, where the oxygen supply is 1 hour or more and pH after 6-14 days is 5.5-7, finishing the fermentation process when there is acid taste, and prilling, drying and packing the finished product, and (d) producing biopesticide using biogas by mixing the biogas, rotenone, rice vinegar, capsaicin and Lactobacillus acidophilus in the mass ratio of 7-10:1-5:2-6:2-4, and fermenting the mixture for 10-15 days.