An electrical connector includes an insulating body and a terminal module. The terminal module includes a first terminal module, a second terminal module, and a shielding piece. The first terminal module includes a number of first conductive terminals. Each first conductive terminal includes a first elastic contact arm and a first tail portion. The second terminal module includes a number of second conductive terminals. Each second conductive terminal includes a second elastic contact arm and a second tail portion. The shielding piece includes a connecting portion and a number of ground terminals. The ground terminals include a number of first ground elastic arms arranged in a same row as the first elastic contact arms and a number of second ground elastic arms arranged in a same row as the second elastic contact arms. As a result, the shielding performance of the electrical connector is improved.