The present invention relates to a bean sprout cultivation apparatus using a housing in which a water tank is formed outside in communication with the cultivation chamber, and the configuration thereof is a housing 1 having a cultivation chamber 3, and is installed under the cultivation chamber 3, (Not shown) is mounted and supported by a floor frame 11, which is piped under the floor frame 11 and guides the hot water heated in the boiler 14 to the cultivation room 3 and stored in the bottom of the cultivation room 3 A hot water pipe 12 that increases the temperature of the cultivation water (W), the temperature of the cultivation water (W) stored in the bottom of the cultivation room (3) by being piped under the floor frame (11) and guiding the raw water to the cultivation room (3) A cold water pipe (13) that lowers the water, a boiler (14) that provides hot water to the hot water pipe (12), a raw water pipe (15) that supplies raw water to the boiler (14) and the cultivation room (3), and cultivation water (W) The spray nozzle (16) that sprays the cultivation tank, the supply pipe (17) that supplies raw water to the cultivation chamber (3), the cultivation water (W) stored in the bottom of the cultivation chamber (3) is transferred to the spray nozzle (16) A water supply pipe (18) that discharges the water stored in the bottom of the cultivation room (3) to the outside, a water level sensor (20) that detects the level of water stored in the cultivation room (3), and the cultivation room ( It includes a temperature sensor 21 for sensing the temperature of the cultivation water (W) stored in 3).본 발명은 재배실과 연통된 외부에 수조가 형성된 하우징을 이용한 콩나물 재배장치에 관한 것으로, 이의 구성은 재배실(3)을 갖는 하우징(1), 상기 재배실(3) 하부에 설치되어 재배통(미도시)을 탑재하여 받침 지지하는 바닥프레임(11), 이 바닥프레임(11) 하부에 배관되고 보일러(14)에서 가열된 온수를 재배실(3)로 안내하여 재배실(3) 바닥에 저장된 재배수(W)의 온도를 높이는 온수파이프(12), 상기 바닥프레임(11) 하부에 배관되고 원수를 재배실(3)로 안내하여 재배실(3) 바닥에 저장된 재배수(W)의 온도를 낮추는 냉수파이프(13), 상기 온수파이프(12)에 온수를 제공하는 보일러(14), 보일러(14)와 재배실(3)에 원수를 공급하는 원수파이프(15), 재배