To provide a power supply socket for light emitting lamp excellent in heat resistant property, on which a power supply terminal of the light emitting lamp can be quickly and simply mounted and dismounted.

The power supplying socket 20 has an insulation base body 201, a contact body 202, an insulation cover 203, and a holding part 204, and the insulation base body 201, the insulation cover 203 and the holding part 204 are integrally formed. The insulation base body 201 is made of a material having heat resistant property and insulation property. The contact body 202 is composed of a plurality of elastic contact pieces 202a having conductivity and elasticity on the outer peripheral face of a post-shaped power supply terminal 526. The insulation cover 203, protruded out in cylindrical wall-shape from the insulation base body 201 so as to surround the elastic contact pieces 202, has an opening 203a for mounting and dismounting the post-shaped power supply terminal 526, at its top end part. The holding part 204 is formed on a part of the insulation base body 201 opposite to the insulation cover 203.