The present invention relates to an apparatus for reconstructing a control message, an apparatus for restoring a control message, a method of reconstructing a control message, and a method of restoring a control message. To this end, an exemplary embodiment of the present invention provides an apparatus for reconstructing a control message, the apparatus including an index parameter generating section that classifies a plurality of first parameters in a control message according to a predetermined criterion to generate group information and generates one or more index parameters corresponding to the group information, and a control message reconstructing section that reconstructs the control message on the basis of the group information and the index parameters. According to the present invention, the size of a control message to be transmitted and received between a base station and a terminal can be reduced, thereby providing more additional services to the terminal through a limited radio resource.