PURPOSE: An agricultural chemical sprayer is provided to have an effect to be able to evenly spread agricultural chemicals to crops with a single movement by positioning an agricultural chemical spray unit above the crops horizontally. CONSTITUTION: An agricultural chemical sprayer comprises a movable storage unit (10) moving along the farm road, in which an agricultural chemical is stored; an agricultural chemical spray unit (20) connected to the movable storage and extended to the horizontal direction; and a lift adding unit (50) providing a lift force in order to maintain the horizontality of the agricultural chemical spray unit. The agricultural chemical spray unit has multiple nozzle units (40) to be spaced with a predetermined distance so that the agricultural chemical is sprayed downward. The agricultural chemical spray unit is a hose of a flexible material. The agricultural chemical spray unit is made of multiple pipes of a rigid material.본 발명은 농약 살포 장치에 관한 것으로서, 특히, 농약이 저장되고, 농로를 따라 이동하는 이동식 저장부와, 상기 이동식 저장부에 연결되어 수평방향으로 연장되는 농약 분사 유닛과, 상기 농약 분사 유닛의 수평을 유지하도록 양력을 부여하는 양력 부가 유닛을 포함함으로써, 농약 살포에 소요되는 인력을 줄이고, 곡물의 상해를 방지하여 곡물 수확량을 높이며, 농약 살포에 소요되는 시간을 대폭 단축시킬 수 있는 이점을 제공한다.