Subtitle roaming system and method

The invention discloses a subtitle roaming system and method. The system comprises a forwarding server, a switch, an embedded distributed decoder, a splicing controller and a large display screen. The switches are cascaded with the embedded distributed decoders to form a local area network; the forwarding server is connected to the local area network to carry out signal scheduling and control the embedded distributed decoder to transmit subtitle signals to the splicing controller, and the large display screen is used for displaying the subtitle signals. According to the method, ultra-high-definition subtitle display for any-resolution screens can be realized, the operation is simple, the system maintenance and upgrading are easier, and the cost is reduced.