Embodiments of the present invention relate to the field of communications technologies, and disclose a multimode base station control method and a base station, which can implement real-time control over transmit power of a base station, thereby improving network energy efficiency. The method includes: switching on, by a base station, a passive antenna to provide service coverage in a first standard for a user; detecting, by the base station, an average traffic volume of a cell in a current state; and when the average traffic volume of the cell in the current state exceeds a preset first threshold, enabling capacity coverage that is in a second standard and is to be provided for the user, and switching an active antenna of the base station to an on state according to the capacity coverage that is in the second standard and provided for the user.