A method of transmitting information, applicable to a base station, and comprising: determining a participating terminal group, each participating terminal UE of the participating terminal group sharing a periodic uplink transmission resource in the same grant-free uplink transmission period in an unlicensed spectrum; and determining shared grant-free uplink transmission configuration information for the participating terminal group, wherein the shared grant-free uplink transmission configuration information is configured to instruct each participating terminal of the participating terminal group to perform uplink transmission automatically according to a preset periodic uplink transmission resource in the unlicensed spectrum. A base station is further provided.