An electrical connector includes an insulating body, which has plural front and rear rows of accommodating troughs for receiving electrical conductive terminals, and two protective blocks protruded upwardly. The accommodating portion has a first accommodating portion, a second accommodating portion extending laterally from the first accommodating portion, and a third accommodating portion extending rearwards from the first accommodating portion. A rear row of the second accommodating portions are located behind the adjacent front row of third accommodating portions. The electrical conductive terminal has a base, a material-belt connecting portion extending from one side of the base, an elastic arm extending from the elastic arm. The elastic arm is adjacent to and exceeds the material-belt connecting portion. The elastic arms of the rear row of the electrical conductive terminals are located between the two adjacent elastic arms of the front row of the electrical conductive terminals.