NOVELTY - Producing sludge synthetic fuel, comprises conveying sludge with 80% of water content in a material storage cabin, stirring the obtained mixture, conveying to a steel belt type press filter (4), chopping the filter cake, conveying to a hot air dryer and drying to the bulk material, conveying the bulk material to a material mixer to mix with a accessory, conveying the obtained material to a belt conveyor, sucking and passing the waste gas to the hot air generation furnace, followed by removing heat of waste hot air with moisture, closing a joint, and controlling an equipment.    USE - The method is useful for producing sludge synthetic fuel.    ADVANTAGE - The method provides the sludge synthetic fuel with less energy consumption in a cost-effective and an environmentally friendly manner.    DETAILED DESCRIPTION - Producing sludge synthetic fuel, comprises conveying sludge with 80% of water content in a material storage cabin (1) to a stirrer (3) through a conveyor (2), uniformly stirring the obtained mixture with a first accessory sent by a material adding device, automatically conveying the mixture to a steel belt type press filter (4) for pressing and dehydrating deeply to obtain a filter cake with less than 50% of the water, chopping the filter cake by a chopper (5), automatically conveying to a hot air dryer of the sludge and drying to the bulk material with 20% of the water, automatically conveying the bulk material to a material mixer to uniformly mixed with a second accessory by a material adding device, automatically conveying the obtained material to a belt conveyor to convey to a bedding plant, sucking waste gas by a blast system of a hot air generation furnace from the material storage cabin, the stirrer and the belt type press filter through an air suction hole, passing the waste gas to the hot air generation furnace for incinerating and removing harmful substance after the waste gas absorbs heat from a side of the heat exchange device of the hot air dryer, passing the waste gas and high-temperature hot air generated by the hot air generation furnace to the hot air dryer for drying sludge, removing heat of waste hot air with moisture discharged from an exhaust hole of the hot air dryer discharged from a side of a heat exchange device and drained to a water bath dust removing device to eliminate smoke and dust, closing a joint by a connecting baffle plate, and controlling an equipment by an electric automatic dosing control cabinet.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of a method for producing sludge synthetic fuel.    Storage cabin (1)    Conveyor (2)    Stirrer (3)    Steel belt type press filter (4)    Chopper. (5)