To enhance the elastic force of an elastic body.

In this electrical connection device, a plurality of holes, penetrating a plate-like housing in the direction of its thickness, are formed at least in one row; the housing is assembled to one face of a wiring board; a plurality of contacts electrically connecting a conductive part of the wiring board and an electrode part of an integrated circuit are disposed in the holes; and a long elastic body which comes into contact with the housing and the contacts is disposed, to extend to cross an elongated hole in the housing. The elastic force of the elastic body is reinforced, by a coil spring disposed in a long rubber member.