Abstract: A high-speed communication connector capable of improving transmission quality and of controlling transmission characteristics is disclosed. The connector is a board-to-board-type connector for high-speed data communication in band of 10 to 25 GHz, and is constructed so as to reduce signal interference by virtue of a finger body having a PCB structure and shield structures between signal lines of a receptacle body filled with a dielectric material and to realize matching between impedances by virtue of the dielectric material and the signal lines.