A method for determining a reference signal, RS, performed by a network device and comprising: configuring N control resource sets for a user equipment, UE, wherein K transmission configuration indication, TCI, information is configured in each of at least part of control resource sets in the N control resource sets, and a quantity of the TCI information K configured in different control resource sets in the at least part of control resource sets is the same or different; wherein N and K are integers greater than or equal to 1, and at least one RS is indicated in each piece of TCI information; and indicating to the UE the at least one RS in the K TCI information; characterized in that: the indicating to the UE the at least one RS in the K TCI information comprises: indicating to the UE one target TCI information in the K TCI information through medium access control, MAC, control element, CE, signaling, and instructing the UE to use an RS indicated by the target TCI information, wherein the RS indicated by the target TCI information is an RS corresponding to a quasi co-location, QCL, TypeD in two RSs comprised in the target TCI information; wherein the RS indicated by the target TCI information is configured for measurement by the UE on the RS indicated by the target TCI information to determine whether a link quality corresponding to a PDCCH corresponding to the RS indicated by the target TCI information satisfies a preconfigured threshold. configuring N control resource sets for a user equipment, UE, wherein K transmission configuration indication, TCI, information is configured in each of at least part of control resource sets in the N control resource sets, and a quantity of the TCI information K configured in different control resource sets in the at least part of control resource sets is the same or different; wherein N and K are integers greater than or equal to 1, and at least one RS is indicated in each piece of TCI information; and indicating to the UE the at least one RS in the K TCI information; characterized in that: the indicating to the UE the at least one RS in the K TCI information comprises: indicating to the UE one target TCI information in the K TCI information through medium access control, MAC, control element, CE, signaling, and instructing the UE to use an RS indicated by the target TCI information, wherein the RS indicated by the target TCI information is an RS corresponding to a quasi co-location, QCL, TypeD in two RSs comprised in the target TCI information; wherein the RS indicated by the target TCI information is configured for measurement by the UE on the RS indicated by the target TCI information to determine whether a link quality corresponding to a PDCCH corresponding to the RS indicated by the target TCI information satisfies a preconfigured threshold. indicating to the UE one target TCI information in the K TCI information through medium access control, MAC, control element, CE, signaling, and instructing the UE to use an RS indicated by the target TCI information, wherein the RS indicated by the target TCI information is an RS corresponding to a quasi co-location, QCL, TypeD in two RSs comprised in the target TCI information; wherein the RS indicated by the target TCI information is configured for measurement by the UE on the RS indicated by the target TCI information to determine whether a link quality corresponding to a PDCCH corresponding to the RS indicated by the target TCI information satisfies a preconfigured threshold.