PURPOSE: Liquid spraying apparatus is provided to control spraying amount of liquid by controlling the effective cross-sectional area of liquid spray hole by a spraying amount control member. CONSTITUTION: Liquid spraying apparatus comprises a liquid reservoir unit, a nozzle part, a jetting amount control unit(450), and a second pressed air supply part(500). The liquid reservoir unit accepts liquid for spraying inside. The nozzle part comprises a liquid path(222), and a liquid jetting hole. The liquid path is connected to the inside of the liquid reservoir unit. The liquid jetting hole is connected to the end part of the liquid path. The jetting amount control unit is able to move in the inside of the liquid path. The end part of the jetting amount control unit is inserted into the liquid jetting hole to be separable. The second pressed air supply part supplies pressed air to the liquid path by connecting with the liquid moving path.본 발명은 액체분무장치에 관한 것으로, 구체적으로는 별도의 분사량조절부를 이용해 액체종류에 따라 액체분사노즐의 분사구 단면적을 조절하여 분사량 및 분사입자크기를 임의로 조절할 수 있도록 하고,별도 노즐청소부를 이용해 노즐부 내부의 청소를 손쉽게 실시할 수 있도록 함에 따라 제품의 유지보수 및 수명연장 효과를 얻을 수 있는 액체분무장치에 관한 것이다.