A beam measurement method, comprising: sending, by a network-side device, configuration information to a terminal device, wherein the configuration information comprises information related to channel state information-reference signal, CSI-RS, resources that are used for beam measurement on an unlicensed frequency band, UFB; and the method further comprises: sending, by the network-side device, a CSI-RS resource to the terminal device based on the configuration information, so that the terminal device performs beam measurement on the UFB based on the configuration information and the CSI-RS resource, characterised in that the information related to CSI-RS resources that are used for beam measurement on a UFB comprises that: the CSI-RS resource has a plurality of slot offsets, so that the CSI-RS resource can be transmitted in the plurality of slots; or, in that the information related to CSI-RS resources that are used for beam measurement on a UFB comprises that: at least one CSI-RS resource is associated with one synchronization signal block, SSB, resource; or, in that the information related to CSI-RS resources that are used for beam measurement on a UFB comprises: the at least one CSI-RS resource is associated with one tracking reference signal, TRS, resource. sending, by a network-side device, configuration information to a terminal device, wherein the configuration information comprises information related to channel state information-reference signal, CSI-RS, resources that are used for beam measurement on an unlicensed frequency band, UFB; and the method further comprises: sending, by the network-side device, a CSI-RS resource to the terminal device based on the configuration information, so that the terminal device performs beam measurement on the UFB based on the configuration information and the CSI-RS resource, characterised in that the information related to CSI-RS resources that are used for beam measurement on a UFB comprises that: the CSI-RS resource has a plurality of slot offsets, so that the CSI-RS resource can be transmitted in the plurality of slots; or, in that the information related to CSI-RS resources that are used for beam measurement on a UFB comprises that: at least one CSI-RS resource is associated with one synchronization signal block, SSB, resource; or, in that the information related to CSI-RS resources that are used for beam measurement on a UFB comprises: the at least one CSI-RS resource is associated with one tracking reference signal, TRS, resource. sending, by the network-side device, a CSI-RS resource to the terminal device based on the configuration information, so that the terminal device performs beam measurement on the UFB based on the configuration information and the CSI-RS resource, characterised in that the information related to CSI-RS resources that are used for beam measurement on a UFB comprises that: the CSI-RS resource has a plurality of slot offsets, so that the CSI-RS resource can be transmitted in the plurality of slots; or, in that the information related to CSI-RS resources that are used for beam measurement on a UFB comprises that: at least one CSI-RS resource is associated with one synchronization signal block, SSB, resource; or, in that the information related to CSI-RS resources that are used for beam measurement on a UFB comprises: the at least one CSI-RS resource is associated with one tracking reference signal, TRS, resource.