To provide an easy-to-process screw type lamp of the high reliability of contact improved in material saving and cost reduction, which can always be connected without fail even when a lamp is replaced.

The lamp is equipped with a base 2 screwed with a screw type lamp plug and a light-emitting part 1, and the base 2 is equipped with a screw 3 and a conductive part 4 made of an elastic body fitted around the peripheral face of the screw 3. The screw 3 has at least a thread or the periphery portion of the thread in a circumferential direction, and the conductive part 4 may be partially formed in a screw-in shaft direction. Here, the screw 3 is fitted with a concave groove 5 of a shaft direction, and the conductive part 4 in the screw-in shaft direction is almost a rectangular sheet metal insertion-coupled with the concave groove 5.