The invention discloses an electric connector, which comprises an insulating shell, at least one first electromagnetic shielding piece and a plurality of terminal modules, wherein the insulating shellis provided with a plurality of terminal through holes and a side wall; the at least one first electromagnetic shielding piece is arranged on the side wall; the plurality of terminal modules are arranged in the insulating shell and located in the side walls, each terminal module is provided with a plurality of grounding terminals and a plurality of signal terminals, one end of each of the plurality of grounding terminals and one end of each of the plurality of signal terminals respectively penetrate into the plurality of terminal through holes, and the surfaces of the plurality of grounding terminals adjacent to the side walls are close to or in contact with the corresponding first electromagnetic shielding pieces. Crosstalk and noise are reduced through the approach or contact between the first electromagnetic shielding piece and the grounding terminal, and the transmission performance of the electric connector is improved.