1. A method for channel detection notification for a base station, comprising:when a LTE system works at an unauthorized frequency band, receiving, by a primary cell base station, Radio Resource Management (RRM) measuring results of multiple base stations at the unauthorized frequency band reported by a terminal;
selecting a secondary cell base station for the terminal according to the RRM measuring results of the multiple base stations;
informing the secondary cell base station to conduct downlink channel detection at the unauthorized frequency band, when it is determined that downlink traffic reaches a set first traffic threshold value; and
informing at least one of the secondary cell base station and the terminal to conduct uplink channel detection at the unauthorized frequency band, when it is determined that uplink traffic reaches a set second traffic threshold value.