The present invention discloses a method for sending uplink control information, wherein the uplink control information is sent over a backhaul link, and said method includes: the uplink control information being born on a backhaul Physical Uplink Control Channel by a relay node to send to an evolved node B, and information born on said backhaul Physical Uplink Control Channel including the uplink control information and a reference signal, and further including 1 or 2 Single-carrier Frequency Division Multiple Access (SC-FDMA) symbols as a guard interval. The present invention further discloses an apparatus for sending uplink control information. In the present invention, it can be efficiently implemented that the uplink control information of the Backhaul Link is born on Backhaul PUCCH by the RN to transmit to the eNB, making full use of the channel condition of the Backhaul Link, and improving the transmission efficiency of the uplink control information of the Backhaul Link.