The invention discloses an exhibition hall equipment and multimedia centralized control system. The exhibition hall equipment and multimedia centralized control system comprises a main controller, a serial server, controlled end equipment and an intelligent control server, wherein the main controller consists of an operation panel, a PC (Personal Computer), an iPad, a mobile phone and an Android host; the operation panel is connected with the intelligent control server; the switching value signal of the operation panel is converted into a network signal through the intelligent control server, and is transmitted to the serial server; the PC, the iPad, the mobile phone, the Android host and the intelligent control server transmit signals to the serial server through a network; the serial server is used for forwarding the signals to controlled ends; the controlled ends refer to a projector, a power amplifier, a power controller, a computer and a plurality of multimedia. The exhibition hall equipment and multimedia centralized control system provided by the invention has the advantages of low cost, high stability and simple circuit. Bidirectional control can be realized between the PC and the iPad, so that great convenience is brought to use.