To provide a turntable door wherein a screen is placed at the indoor front when air-conditioning in summer and the screen is placed at the outdoor front when air-conditioning in winter, so as to rotate the turntable 180 degrees around to reverse the screen and the entrance on the opposed side for blocking the wind and thus saving air-conditionin expenses, while an interval time between closing of an automatic opening/closing device for a central door is set differently in such a way that the door is kept open with a longer interval time when many people are going in and out for letting the people flow smoothly.

The entrance is formed at the opposed side of the periperal arcuate screen in the round turntable while the central door automatic opening/closing device in an arcuate shape bent in the same direction as the screen is provided at the center of the turntable. The automatic opening/closing device having different interval time between closing stays open when a lot of people going in and out with a longer interval time, so as to have the unimpeded flow of the people. Also, the turn table rotates 180 degrees around in order that the screen stands at the indoor front in summer air-conditioning time whereas it stands at the outdoor front in winter air-conditioning time.