NOVELTY - Producing refuse derived fuel (RDF) from municipal waste and buried waste comprises: opening bags containing municipal waste with a bag opener and then sorting, separating incombustible materials and then storing in a container; pulverizing the materials for producing fluff-type RDF and pellet-type RDF, and measuring a moisture content of the pulverized materials with a moisture content measuring unit, where the combustible waste is dried, and pellet-type RDF and fluff-type RDF are selectively produced based on moisture content.    USE - The method is useful for producing refuse derived fuel from municipal waste and buried waste using a dual drying system and a dual exhaust treatment system (claimed).    ADVANTAGE - The method is capable of producing less impurity and good smell RDF fuel with reduced energy consumption and high quality in an economical manner.    DETAILED DESCRIPTION - Producing refuse derived fuel (RDF) from municipal waste and buried waste using a dual drying system and a dual exhaust treatment system comprises: opening bags containing municipal waste with a bag opener, sorting the municipal waste according to a particle size with a trommel screen in a first sorting process, separating incombustible metals with a magnetic separator and then manually separating combustible waste; separating incombustible materials from the combustible waste separated in the first sorting process with a fan separator comprising a fan heater and then storing the incombustible materials in a container to separate combustible materials and hot air-dry the same in a first drying process; pulverizing the combustible materials for producing fluff-type refuse derived fuel having a moisture content of 25 % or less, and pellet-type refuse derived fuel having a moisture content of 10 % or less in a pulverization process; measuring a moisture content of the combustible materials pulverized above with a moisture content measuring unit in a moisture content measuring process; receiving the combustible materials measured as having a moisture content more than 10% in the moisture content measuring process, drying the same with air heated in a heating furnace in a drying chamber, filtering fine dusts from the air with a cyclonic separation apparatus, injecting a certain amount of the air to the heating furnace, supplying the rest of the air to a washing tower to remove impurities such as a sulfur compound and discharging the same in a first type second drying process; receiving the combustible materials measured as having a moisture content more than 25% in the moisture content measuring process, drying the same with air heated in a heating furnace in a drying chamber, filtering fine dusts from the air with a cyclonic separation apparatus, injecting a certain amount of the air to the heating furnace, supplying the rest of the air to a washing tower to remove impurities such as a sulfur compound and discharging the same in second type second drying process; measuring a moisture content of the combustible materials which have undergone the first type second drying process in case of producing pellet-type RDF, re-subjecting the combustible materials to the first type second drying process if the moisture content is more than 10 % and forming the combustible materials having a moisture content of 10 % or less which are introduced from the pulverization process or the first type second drying process into pellet-type RDF in a pellet-type RDF forming process; and measuring a moisture content of the combustible materials which have undergone the second type second drying process in case of producing fluff-type RDF, re-subjecting the combustible materials to the second type second drying process if the moisture content is more than 25 % and storing the combustible materials having a moisture of 25 % or less which are introduced from the pulverization process or the second type second drying process in an RDF bin in a fluff-type RDF discharging process. The combustible waste is dried with two steps and pellet-type RDF and fluff-type RDF are selectively produced according to moisture content. The drying chamber of the first type second drying process and the second type second drying process dries the combustible materials with a rotary kiln-type direct drying method. The fine dusts are filtered from the air through the cyclonic separation apparatus or a bag filter of a duct. The air is washed with a washing liquid comprising sulfuric acid, sodium hypochlorite, and sodium hydroxide in the washing tower and introduced through a recycling fan to be reused as inlet air of the heating furnace. The heating furnace re-heats the air. An odor treatment tank and a gas treatment tank for treating an odor and harmful gas generated in the drying chamber and a forming chamber are embedded in the washing tower. The odor treatment tank and the gas treatment tank comprise a separation wall for separating the washing liquid, primarily treating exhaust gas with the washing liquid separated in one side of the separation wall and secondarily treating the exhaust gas with the washing liquid separated in another side of the separation wall.