A control signaling transmission method, comprising receiving (S601, S701), by a terminal, a first downlink control signaling sent by a base station, wherein the first downlink control signaling is carried in a physical downlink control channel, PDCCH; obtaining, by the terminal, a value of a preset bit in the first downlink control signaling, and determining, according to the value of the preset bit, whether there is a need to feed back acknowledgement information corresponding to a reception of the first downlink control signaling, wherein the acknowledgement information comprises an acknowledgement message and a non-acknowledgement message; and if the terminal needs to feed back the acknowledgement information corresponding to the reception of the first downlink control signaling, obtaining, by the terminal, from the first downlink control signaling, information about a resource allocated by the base station to the terminal, wherein the resource is used for the terminal to feed back the acknowledgement information, and sending, by the terminal, the acknowledgement message to the base station through the resource allocated by the base station when the first downlink control signaling is successfully received and sending the non-acknowledgement message to the base station through the resource allocated by the base station when the first downlink control signaling is not successfully received. receiving (S601, S701), by a terminal, a first downlink control signaling sent by a base station, wherein the first downlink control signaling is carried in a physical downlink control channel, PDCCH; obtaining, by the terminal, a value of a preset bit in the first downlink control signaling, and determining, according to the value of the preset bit, whether there is a need to feed back acknowledgement information corresponding to a reception of the first downlink control signaling, wherein the acknowledgement information comprises an acknowledgement message and a non-acknowledgement message; and if the terminal needs to feed back the acknowledgement information corresponding to the reception of the first downlink control signaling, obtaining, by the terminal, from the first downlink control signaling, information about a resource allocated by the base station to the terminal, wherein the resource is used for the terminal to feed back the acknowledgement information, and sending, by the terminal, the acknowledgement message to the base station through the resource allocated by the base station when the first downlink control signaling is successfully received and sending the non-acknowledgement message to the base station through the resource allocated by the base station when the first downlink control signaling is not successfully received. obtaining, by the terminal, from the first downlink control signaling, information about a resource allocated by the base station to the terminal, wherein the resource is used for the terminal to feed back the acknowledgement information, and sending, by the terminal, the acknowledgement message to the base station through the resource allocated by the base station when the first downlink control signaling is successfully received and sending the non-acknowledgement message to the base station through the resource allocated by the base station when the first downlink control signaling is not successfully received.