A method and a system for processing downlink control information are disclosed, in which downlink control information for the subframe n may be transmitted in a subframe n or the downlink control information for the subframe n may be transmitted in a subframe n−1. By means of technology for processing control channel information provided by the disclosure, a region where the downlink control information is transmitted is added, and space division technology can be fully utilized, so that a load of a Physical Downlink Control Channel (PDCCH) is reduced, the interference between control channels is reduced, and the capacity of the control channel is enlarged.