To provide a compact self-ballasted fluorescent lamp capable of easily sticking a heat conductive substance to an electronic component of a lighting circuit.

A cover body of the compact self-ballasted fluorescent lamp comprises of a plurality of divided bodies 10a and 10b, so that, when the insides of the divided bodies 10a and 10b are filled with the heat conductive substance 6, the filling works of the heat conductive substance 6 can be performed before joining the plurality of divided bodies 10a and 10b together so as to facilitate the work filling the cover body inside with the heat conductive material 6.