The present invention relates to a natural mulching film capable of effectively preventing environmental pollution as well as saving manpower and time because naturally decomposing in soil or laminating environmentally harmful substances does not occur when laminating natural pulp wetland with a silkworm A film supply unit for supplying a film from a natural pulp wetted-gauze film fabric so as to provide a preparation chamber; and a first silage supply unit for supplying the silk thread on the transfer path of the film according to the film supply unit A first material supply unit configured to supply the first material; A spray nozzle unit disposed behind the first material supply unit and spraying water onto the film attached with the silk thread passing through the first siliceous supply unit; A hot air dryer for injecting hot air onto the entry runway and drying the film, the hot runner having an entrance runway through which the film passed through the spray nozzle section can be moved toward a post process; A second film supply unit for supplying the first film to the first film supply unit and the second film supply unit for supplying the second film supply unit to the film supply unit through the hot air drying unit, A second material supply unit including the unit; A film joining unit for applying pressure to the film fed from the first material feeding unit and the laminated film fed from the second material feeding unit and joining them together with a mulching film; And a rewinder installed in a lower portion of the second material supplying unit and winding the mulching film supplied from the film joining unit in the form of a roll to form a roll of molten film, .본 발명은 천연펄프 습강지을 명주실과 함께 일괄적으로 합지하여 토양에서 자연분해되거나 소각시 환경 유해물질이 발생하지 않아 노동력 및 시간을 절약함은 물론 환경오염을 방지할 수 있는 천연멀칭필름을 효율적으로 제조함을 제공하도록, 천연 펄프 습강지 필름원단에서 필름을 공급시키는 필름공급유닛과, 상기 필름공급유닛에 따른 필름의 이송경로 상에 명주실을 부착시킬 수 있게 공급하는 제1명주실공급유닛을 포함하여 구성하는 제1자재공급부와; 상기 제1자재공급부의 후방에 구비되고 상기 제1명주실공급유닛을 거쳐 명주실이 부착된 필름에 물을