The invention provides a tunable antenna management method, a tuning unit and a base station. The tuning unit is connected with at least one base station through a group of AISG ports of a remote control unit. The method includes that the tuning unit receives authority configuration information transmitted through the AISG ports of the remote control unit from the first base station; configuring the management authority of the first base station on the tuning unit based on the authority configuration information, wherein the management authority at least includes control authority and inquiry authority. The authority of the tuning unit can only be configured to one base station. Therefore, the tuning unit can be managed by multiple base stations and a problem of positioning and checking difficulties when configuration errors of the tuning unit occur are eliminated.