The present invention relates to a board mating connector including a first body part having a first hollow portion formed therein, a signal contact part inserted into the first hollow portion, a dielectric part positioned between the first body part and the signal contact part, a second body part which has a second hollow portion formed therein, is positioned between the dielectric part and the first body part, and is formed of a metal plate, and a ground contact part which extends upward from an upper side of the second body part and is separated into a plurality of portions by a plurality of slits to have elasticity.