According to the present invention, a spray power transfer apparatus of an agricultural vehicle comprises: an engine (20) installed on one side of a lower portion of a vehicle (10) a spray (30) installed on the other side of the lower portion of the vehicle (10) a connection body (40) to connect a gap between a drive body (21) mounted on a drive shaft of the engine (20) and a rotary body (31) mounted on a rotary shaft of the spray (30) a body (110) wherein the spray (30) is installed on an upper portion thereof to be detached and attached to the other side of the lower portion of the vehicle (10) a tension adjustment unit (120) formed on one side of the upper portion of the body (110) to adjust tension of the connection body (40) a connection member (130) connected to one side of the tension adjustment unit (120) and an operating unit (140) installed on one side of an upper portion of the vehicle (10) to vertically move the connection member (130) by an operation of a user to operate the tension adjustment unit (120). The present invention can efficiently block or transfer power of the engine to the spray to improve work efficiency. Specifically, since the present invention can easily replace and install the spray, use efficiency is improved. Also, the present invention adjusts tension of the connection body connecting a gap between the engine and the spray to simplify a structure and efficiently transfer power. Moreover, since the present invention can quickly release tension of the connection body, power between the engine and an unused spray is blocked to prevent malfunction and an accident.본 발명은 차량(10)의 하부 일측에 설치하는 엔진(20) 차량(10)의 하부 타측에 설치하는 분무기(30) 상기 엔진(20)의 구동축에 장착하는 구동체(21)와 상기 분무기(30)의 회전축에 장착하는 회전체(31)의 사이를 연결하는 연결체(40) 상기 분무기(30)를 상부에 설치하여 차량(10)의 하부 타측에 탈착할 수 있도록 마련하는 몸체(110) 상기 몸체(110)의 상부 일측에 형성하여 상기 연결체(40)의 장력을 조절하기 위한 장력조절부(120) 상기 장력조절부(120)의 일측에 연결하는 연결부재(130) 상기 차량(10)의 상부 일측에 설치하여 사용자의 조작으로 상기 연결부재(130)를 상하방향으로 이동시켜 상기 장력조절부(120)를 작동하기 위한 조작부(14
