A method for indicating frequency-domain information of a common control resource set, CORESET, of remaining minimum system information, RMSI, for applying to a base station, the method comprises: adding indication information included in a physical broadcast channel, PBCH, of a synchronization signal block, SSB, the indication information comprising first indication information, in response to the first indication information being configured to indicate that a CORESET of RMSI corresponding to the SSB and the SSB are frequency division multiplexed; the indication information further comprises second indication information, and the second indication information is configured to indicate the bandwidth part where the CORESET of the RMSI corresponding to the SSB is located is different from the bandwidth part where the SSB is located; or the indication information further comprises third indication information, and the third indication information is configured to indicate the bandwidth part where the CORESET of the RMSI corresponding to the SSB is located is same as the bandwidth part where the SSB is located, and indicate an offset between the CORESET of the RMSI corresponding to the SSB and the SSB; in response to the first indication information being configured to indicate that the CORESET of the RMSI corresponding to the SSB and the SSB are time division multiplexed, a center frequency of the CORESET of the RMSI corresponding to the SSB and a center frequency of the SSB are same; wherein the bandwidth part refers to a resource unit with a certain frequency region of a frequency band; and sending the SSB including the indication information and the CORESET of the RMSI to user equipment, UE in a beam scanning manner. adding indication information included in a physical broadcast channel, PBCH, of a synchronization signal block, SSB, the indication information comprising first indication information, in response to the first indication information being configured to indicate that a CORESET of RMSI corresponding to the SSB and the SSB are frequency division multiplexed; the indication information further comprises second indication information, and the second indication information is configured to indicate the bandwidth part where the CORESET of the RMSI corresponding to the SSB is located is different from the bandwidth part where the SSB is located; or the indication information further comprises third indication information, and the third indication information is configured to indicate the bandwidth part where the CORESET of the RMSI corresponding to the SSB is located is same as the bandwidth part where the SSB is located, and indicate an offset between the CORESET of the RMSI corresponding to the SSB and the SSB; in response to the first indication information being configured to indicate that the CORESET of the RMSI corresponding to the SSB and the SSB are time division multiplexed, a center frequency of the CORESET of the RMSI corresponding to the SSB and a center frequency of the SSB are same; wherein the bandwidth part refers to a resource unit with a certain frequency region of a frequency band; and sending the SSB including the indication information and the CORESET of the RMSI to user equipment, UE in a beam scanning manner.