The present invention provides an automatic temperature controlling system for a house. After a change in a temperature in a vinyl house is sensed, a state of opening and closing a window for ventilation and a speed of opening and closing a window are automatically controlled. Thus, a set temperature in a cultivation space of the vinyl house is efficiently maintained. At the same time, an ideal growth environment for crops of cultivation is uniformly composed. The automatic temperature controlling system comprises: a house main body having a cultivation space formed to allow crops to be cultivated therein； a temperature adjusting unit installed on the house main body to be able to rotate, having a ventilation window prepared to be opened and closed at one side surface of a wall in the cultivation space, and connected to one end of the ventilation window, wherein the ventilation window is disposed to be capable of opened and closed in a set trajectory to control a temperature in the cultivation space； a temperature sensing unit installed in the house main body, and measuring and sensing a change in a temperature of the cultivation space； and a temperature controlling unit for setting up temperature and trajectory information in the cultivation space of the house main body, and applying a control signal for opening and closing operations of the temperature adjusting unit according to a sensing signal inputted from the temperature sensing unit. In the temperature controlling unit, an opening and closing speed of the temperature controlling unit can be set and controlled along with the reference set temperature and the trajectory information for opening and closing operations of the cultivation space.본 발명은 비닐 하우스 내 온도변화를 감지한 후 통풍을 위한 창문의 여닫힘 여부 및 그 속도를 자동으로 제어하여 하우스 내 재배공간의 설정온도를 효율적으로 유지함과 동시에 재배작물의 이상적인 생장환경을 균일하게 조성함을 제공하도록, 내부에 작물을 재배가능한 재배공간을 형성하는 하우스본체와； 상기 하우스본체 상에 회전가능하게 설치되며 상기 재배공간의 한쪽 벽면에 여닫힐 수 있는 통풍창을 구비하고, 상기 통풍창의 일단에 연결되되 상기 재배공간 내 온도를 조절할 수 있게 상기 통풍창을 설정궤
