The invention relates to the field of intelligent constructional engineering, in particular to a transmitter centralized installation device for a conference system. The device comprises an IU shell, a switch box is slidably inserted into a front end opening of the IU shell, the IU shell and the switch box are fixedly connected through a right-angle connecting piece, a transmitter which is fixedly bonded through a back adhesive magic tape is arranged in an inner cavity of the IU shell, a switch box is arranged in the IU shell, a partition insertion plate is vertically inserted between the IU shell and the switch box, a T-shaped insertion strip is arranged on the partition insertion plate, and a rotating plate is rotatably mounted at the lower end of the partition insertion plate. The beneficial effects of the invention are that through the arrangement of the switch box and the partition plate which are installed in a plug-in manner, so that the internal space of the installation box can be conveniently adjusted, transmitters of different sizes of various manufacturers can be effectively installed in a centralized mode, the transmitters can be clearly distinguished, wires of the transmitters pass through the switching power supply and the threading holes in the device, wire arrangement is convenient and tidy, later maintenance and use are convenient, and normal operation of the system is guaranteed.