Disclosed are a method and device for configuring a resource, determining a partial bandwidth and indicating the partial bandwidth. The method comprises: a base station determining the partial bandwidth according to a mapping relationship between a first carrier bandwidth and a first partial bandwidth set and/or the mapping relationship between a capability bandwidth of a terminal device and a second partial bandwidth set, wherein the first partial bandwidth set comprises a plurality of partial bandwidths, the first partial bandwidth set comprises the partial bandwidth, the second partial bandwidth set comprises a plurality of partial bandwidths, and the second partial bandwidth set comprises the partial bandwidth; and the base station indicating the partial bandwidth to the terminal device.