PURPOSE: A controller for a livestock shed vent is provided to prevent the decrease of the immunity of domestic animals. CONSTITUTION: A controller for a livestock shed vent comprises an automatic operation temperature setting unit(110), a manual operation temperature setting unit(115), an operation signal generating unit(120), a temperature range setting unit(130), a temperature range signal generator(140), a controller(150), and a display unit(160). The automatic operation temperature setting unit automatically sets the operation temperature for operating a vent. The manual operation temperature setting unit is automatically operated by an administrator. The operation signal generating unit generates an operation signal and transmits the signal to the controller. The temperature range setting unit is manually operated by an administrator. The temperature range signal generator generates a temperature range signal and transmits the signal to the controller. The controller is linked with the operation signal and temperature range signal and controls the ventilation amount of the vent. The display unit displays the environmental condition of a livestock shed by numbers or characters. [Reference numerals] (10) Ventilation unit； (110) Automatic operation temperature setting unit； (115) Manual operation temperature setting unit； (120) Operation signal generating unit； (130) Temperature range setting unit； (140) Temperature range signal generator； (150) Controller； (160) Display unit； (171) Highest temperature display button； (172) Lowest temperature display button； (173) Average temperature display button； (181) Maximum ventilation amount setting button； (182) Minimum ventilation amount setting button； (191) Highest limit temperature setting button； (192) Lowest limit temperature setting button； (S) Temperature sensor본 발명은 축사내 환기부 제어 콘트롤러에 관한 것으로서, 온도센서(S)가 설치된 축사(B) 내부를 환기하기 위한 환기부(10)를 제어하기 위한 콘트롤러(100)에 있어서, 상기 환기부(10)가 환기량을 가변하도록 그 환기부(10)가 작동되기 위한 작동온도(T0)를 매일 자동으로
