The present disclosure provides a method for transmitting and receiving a synchronization signal block in a 5G system, and a device for transmitting and receiving a synchronization signal block in a 5G system. The method for transmitting includes: determining a position of a synchronization subframe, the synchronization subframe being configured to transmit the synchronization signal block, and the synchronization signal block comprising at least a signal for measurement; and transmitting the synchronization signal block according to the position of the synchronization subframe within a minimum period for the uplink/downlink configuration in a LTE system. Embodiments in the present disclosure are configured to transmit the synchronization signal block with a smaller interference between different systems.