The invention discloses a method and an apparatus for the dynamic assignment of reserved resources of uplink control channel, wherein the method comprises the steps: configuring each uplink carrier statically to reserve corresponding uplink control channel areas for a first assigned number of downlink carriers, wherein the first assigned number is not more than the total number of the downlink carriers; configuring the assigned uplink carrier dynamically to additionally reserve corresponding uplink control channel areas for a second assigned number of downlink carriers, wherein the second assigned number is not more than the difference between the total number and the first assigned number of the downlink carriers; and selecting the statically and/or dynamically configured uplink carrier transmission control signaling by user equipment. Using the method and the apparatus can avoid the waste of uplink carrier resources, ensure the uplink resources available for data transmission and remarkably enhance transmission efficiency of system.