The present invention relates to a water supply device for livestock. The water supply device can supply a proper amount of water to livestock by automatically adjusting the water level, and can supply heated water by having a heater which heats the water to the temperature suitable for livestock to drink. The water supply device of the present invention comprises: a barrel-type water tank (10) having a bowl installation hole (10d) formed on the upper surface and a bowl (20) installed to the bowl installation hole of the water tank to be detachable, and having a hemispherical storage space.COPYRIGHT KIPO 2016본 발명은 자동으로 수위를 조절하여 가축에게 적당량의 물을 공급할 수 있을 뿐만 아니라, 히터를 구비하여 가축이 먹기에 적정한 온도로 가열하여 물을 제공할 수 있고, 세척을 보다 용이하게 할 수 있게 한 가축용 급수장치에 관한 것이다.
