NOVELTY - Anaerobic fermentation treatment method for sorting rubbish of restaurant and kitchen, involves: pouring kitchen garbage into hopper; crushing kitchen garbage into organic slurry; sterilizing crushed organic slurry at high temperature, mixing with free water; recycling grease for producing biological diesel oil; separating solid-liquid and oil-water separated solid, removing silt; hydrolyzing and acidifying kitchen garbage in anaerobic fermentation system; separating biogas slurry by solid-liquid separation technique; and pre-treating kitchen garbage as fertilizer.    USE - As anaerobic fermentation treatment method for sorting rubbish of restaurant and kitchen (claimed).    ADVANTAGE - The method removes kitchen garbage impurity of more than 90%; effectively remove oil grease; is pollution free; and has high economic benefit.    DETAILED DESCRIPTION - Anaerobic fermentation treatment method for sorting rubbish of restaurant and kitchen, involves: (A) pouring the original kitchen garbage into the hopper; (B) breaking into large amount, removing large block matter; (C) then crushing the kitchen garbage into organic slurry, selecting the biochemical inert material; (D) sterilizing the crushed organic slurry at high temperature, mixing with free water, sterilizing at high temperature, conveying the material to the solid-liquid separation system, where the solid content after solid-liquid separation is less than 60%; (E) after solid-liquid separation to the liquid material for oil-water separation, recycling grease using separated oil for producing the biological diesel oil raw material or chemical raw material; (F) separating the solid-liquid and oil-water separated solid, removing silt; (G) hydrolyzing and acidifying the kitchen garbage in anaerobic fermentation system, degrading the organic matter to generate marsh gas; (H) separating biogas slurry by solid-liquid separation, generating marsh gas by desulfurizing, dehydrating and then directly generating or purifying to prepare natural gas; and (J) by using biologic deodorizing technique, pre-treating kitchen garbage as fertilizer.