Electric connector

The utility model discloses an electric connector for electrically connecting a butting element to a circuit board. The electric connector comprises an insulating body, a plurality of terminals fixedly arranged on the insulating body, a metal shell covering the insulating body, a plurality of first grounding pieces and a plurality of second grounding pieces, the metal shell is provided with a top wall and side walls which respectively bend and extend towards the circuit board from two opposite sides of the top wall, a first contact arm of the first grounding piece is downwards and electrically abutted against the circuit board, and a second contact arm of the first grounding piece is upwards and electrically abutted against the side walls; the third contact arm of the second grounding piece is downwards and electrically abutted against the butt joint element, and the fourth contact arm of the second grounding piece is upwards and electrically abutted against the side wall; therefore, interference signals betw