Disclosed are an uplink-downlink configuration method and device in a system using a time division duplex communication mode, which relate to the technical field of wireless communications and are used for optimizing a configuration solution of an uplink/downlink subframe allocation manner. In the present invention, the method comprises: a central node device receiving reference information which is used for configuring an uplink-downlink configuration and sent by a transmission node device managed by the central node device; the central node device configuring the uplink-downlink configuration according to the received reference information; and the central node device sending the information about the configured uplink-downlink configuration to the corresponding transmission node device or to the corresponding transmission node device and a terminal. The configuration solution of the uplink-downlink configuration in the present invention is more optimized.