The present invention relates to the field of television sets, and solves the problem that the management efficiency of the existing unconnected television is low. A system and a method for the centralized management of unconnected televisions are provided, A system for centralize management of unconnected television, comprises at least one unconnected television unit and a control terminal, wherein the at least one unconnected television unit is respectively connected with the control terminal, the unconnected television unit comprises an unconnected television and a serial port network module, the serial port end of the serial port network module is connected with the unconnected television, and the network end of the serial port network module is connected with the control terminal; A user can realize centralized management of a plurality of unconnected televisions by sending control instructions by a control terminal, such as switching on/off or changing channels, the efficiency ofmanaging multiple unconnected TVs is improved, the human cost is reduced, different unconnected TVs are distinguished by different MAC addresses, the purpose of independent control of unconnected TVsis achieved, and the management requirements are maximized, especially suitable for places where multiple unconnected TVs exist.