An electrical connector is mounted on a circuit board and used to mate with a mating member. The electrical connector includes: a body made of a wave-absorbing material, the body having an upper surface, a lower surface and at least one first accommodating groove; and at least one ground terminal accommodated in the first accommodating groove. An upper end of the ground terminal is exposed to the upper surface and is in electrical contact with the mating member, and a lower end of the ground terminal is exposed to the lower surface and is electrically connected with the circuit board.