An electrical connector includes an insulating housing, a shielding shell and a plurality of terminals received in the insulating housing. The insulating housing has a protrusion, a middle of the protrusion protrudes frontward to form an inserting portion, and defines a plurality of first grooves adjacent to the protrusion and a plurality of second grooves connected with the corresponding first grooves. The shielding shell includes a first shielding shell and a second shielding shell, the first shielding shell has a plurality of arms, the second shielding shell defines an opening at a middle thereof, a plurality of splinters bent inward from fringes of the opening, the first shielding shell surrounds the protrusion and the inserting portion with the arms inserted in the corresponding first grooves, the second shielding shell surrounds the insulating housing, the splinters are inserted in the corresponding second grooves and abut against the corresponding arms.