The present invention relates to an automatic spraying device of a snow removal liquid. Especially, in the automatic spraying device of the snow removal liquid, a scale plate is installed on a roof of a building or a greenhouse and has a flat surface such that falling snow is stacked thereon； a weight sensor is placed in an electronic scale main body and is connected to the scale plate to detect a changed weight of the scale plate； a first female screw part, which is formed on a lower inner circumferential surface of the electronic scale main body, is coupled and combined with a first male screw part which is formed on an upper outer circumferential surface of a driving case； a pump connected to a suction pipe and a discharge pipe is mounted on an inner center of the driving case； a control box is placed on an inner one side of the driving case to command the operation of the pump and collect information on the weight sensor； a third female screw part of a sprinkler is coupled to a third male screw part which is formed at the discharge pipe of the pump passing a second through hole of the electronic scale main body and a first through hole of the scale plate to be exposed； a second male screw part, which is formed on an upper outer circumferential surface of a snow removal liquid container, is coupled and combined with a second female screw part which is formed on a lower inner circumferential surface of the driving case； and the suction pipe of the pump, which passes through a third through hole at the lower part of the driving case, is inserted into a fourth through hole formed at an upper center of the snow removal liquid container. According to the present invention, it is possible to reduce a waste of manpower and prevent a collapse of a greenhouse due to the snow loading because the automatic snow removal work can be performed by unmanned operation.본 발명은 제설액을 자동으로 분사하는 장치에 관한 것으로 특히, 건물이나 비닐하우스 지붕에 설치되어 내리는 눈이 적재될 수 있도록 평활한 평면을 갖는 저울판을 구비하고 저울판과 전자저울본체에 안착된 무게
