NOVELTY - Producing solid fuel from livestock droppings, by mixing effective microorganism group with bean curd lees, preparing fermentation assistant flooring material for cattle and pig feces and hen droppings by performing primary fermentation, fermenting cattle and pig feces and hen droppings with fermentation material to obtain primary charcoal bed of cattle and pig feces and hen droppings, mixing charcoal bed of cattle feces, pig feces and hen droppings with fermented eggshell calcium powder and charcoal powder and performing secondary fermentation to obtain the solid fuel.    USE - The method is useful for producing solid fuel from droppings of livestock (claimed) which is useful as manure in agriculture.    ADVANTAGE - The solid fuel produced is highly safe, discharges less amount of carbon dioxide, has high moisture content, and does not contain offensive odor. The ashes remaining after burning the solid fuel are harmless. The solid fuel can be produced rapidly and cost-effectively from livestock droppings without causing environmental pollution.    DETAILED DESCRIPTION - Method of producing solid fuel from livestock droppings, involves mixing effective microorganism group containing 55% of aerobe group and 45% of anaerobic group with bean curd lees, preparing fermentation assistant flooring material for cattle feces, pig feces and hen droppings by carrying out primary fermentation at 40-200 degrees C for 24 hours, individually fermenting cattle feces, pig feces and hen droppings with fermentation assistant flooring material for 48 hours to obtain cattle feces primary charcoal bed, pig feces primary charcoal bed and hen droppings primary charcoal bed, mixing cattle feces primary charcoal bed, pig feces primary charcoal bed, hen droppings primary charcoal bed, fermented eggshell calcium powder and powder of charcoal and carrying out secondary fermentation at 60-80 degrees C for 48 hours to obtain the solid fuel. The effective microorganism group comprises alkaliphilic Bacillus sp. Tateyama-Ken (FERM BP-10691), alkaliphilic Bacillus sp. Tateyama-Yakushi (FERM BP-10692), halophilic Bacillus sp. Tateyama-Jodo (FERM BP-10693), anaerobic Atopostipes sp. Tateyama-Nyojo (FERM BP-10690), and anaerobic and halophilic Clostridium Tateyama-Ryuo (FERM BP-10694).