An electrical connector and a conductive member thereof are provided. In one embodiment of the present invention, the conductive member is installed in an insulating body, and a solder ball is retained between two retaining ends of the conductive member to form the electrical connector. In the conductive member, a base extends downwards to form two soldering arms, each of the soldering arms has an extending arm and a retaining end extending from the extending arm, the retaining ends are exposed outside the insulating body, and at least one of the retaining ends is provided with a recessed portion, so as to enable the solder ball, when entering between the two retaining ends, to prop the two retaining ends and partially enter the recessed portion, so that the solder ball is securely retained by the two retaining ends, thereby preventing the solder ball from falling off from the two retaining ends when the electrical connector is under an external force.