Disclosed is a method and apparatus for sending and receiving downlink control signalling, a base station and a terminal. The method includes that a base station sends downlink control signalling carrying indication information to a terminal. The indication information in the downlink control signalling at least includes one of: information for indicating a receiving manner to the terminal, reference signal resource information referenced for calculating downlink scheduling information, reference signal resource information referenced for calculating uplink scheduling information, or allocation information of a resource block.