Disclosed are a method, a base station and a user equipment for subframe configuration in a time division duplex system. The method comprises: a base station determining a subframe number of a flexible subframe in a radio frame; the base station determining a feature of the flexible subframe corresponding to the subframe number, where the feature indicates that the flexible subframe is an uplink subframe or a downlink subframe; and the base station sending to a user equipment a first signaling via a downlink control channel, where the first signaling includes the feature of the flexible subframe corresponding to the subframe number. By applying the method, the base station and the user equipment in the embodiments of the present invention, the object that the base station notifies the user equipment that a particular flexible subframe is an uplink subframe or a downlink subframe via signaling can be achieved, and the user equipment can communicate normally with the base station when knowing the feature of the flexible subframe.