PURPOSE: A cooling and heating system of a livestock shed is provided to offer an agreeable environment to domestic animals by circulating air.CONSTITUTION: A cooling and heating system of a livestock shed comprises a livestock shed main body(100), a heating device, and a fan coil unit(300). In the livestock shed main body, a plurality of support walls are expanded from the floor thereof. The heating device is installed in the floor of the livestock shed main body and heats the floor of the livestock shed by using provided fluid. The fan coil unit is installed in the upper part of the livestock shed main body, circulates air, and is equipped with a fan coil unit body, a blower, and a coil.COPYRIGHT KIPO 2012본 발명의 바람직한 일 실시 예에 의하면, 축사본체 축사본체의 바닥에 설치되며 공급되는 유체에 의해서 축사의 바닥을 난방시키는 난방장치 및 축사본체의 상측에 설치되며 축사 내부의 공기를 하측에서 흡입하여 교반시키는 팬코일유닛을 포함하여 이루어지는 것을 특징으로 하는 축사의 냉난방시스템이 제공된다.