A folding lamp rod and junction box structure in which the connector block has an access opening in its the top surface and, furthermore, the free extremity of an elastic tab at the side of the access opening extends into the access opening. A matching sawtooth-shaped inset section angles upward from the top surface at the end of the connector block and, furthermore, after the inset section is inserted into the mounting base socket, a spring at the mounting base top surface is pushed slightly upward, the rebound force of the spring then directed against the connector block to retain it while plugged into the mounting base. A threaded hole is tapped in the side of the mounting base and, furthermore, an elongated hole along the side of the connector block is aligned with the mounting base threaded hole position, providing for the penetration of the screw through both the mounting base and the connector block such that before the complete insertion of the connector block into the mounting base, the lamp rod can be rotated a suitable angle to thereby reduce the space occupied by the lamp rods and the junction box during shipment. As a result, after user purchase, it is only necessary to insert both the lamp rod and the connector block into the junction box mounting base for utilization.