Teaching central control system

The invention discloses a teaching central control system which comprises a control host, a video playing module and an audio playing module. The video playing module and an audio playing module are electrically connected with the control host. The control host comprises a central control chip, a panel, relays, and a plurality of first interfaces. The central control chip is used for controlling the working of the audio playing module and the video playing module and also is used for receiving the input data of the panel. The central control chip communicates with external equipment through a corresponding interface. The central control chip is connected to a rising device of a projection screen, a lowering device of the projection screen and a projector seat through corresponding relays, and controls the up and down of the projection screen and the switch-on and switch-off of a projector according to a signal received through a corresponding first interface. The teaching central control system has the advant