A backplane and a communications device are disclosed. The backplane includes: at least one fixing plate, multiple connectors, and multiple flexible cables, where signal connection is implemented between corresponding connectors by means of the flexible cables, each of the connectors is provided with a housing and multiple signal pins installed on the housing, and the housing is installed on the fixing plate and is provided with a jack for insertion of a connector of a subcard in the communications device; one end of each signal pin is inserted into the jack, and the other end is connected to each flexible cable. When the communications device provided with the backplane transmits a high-rate signal, transmission quality and a transmission rate are relatively high.