To provide a switch device that can shorten a depression stroke length without deteriorating a switch operation feeling.

A switch operation part 10 is integrally formed out of an elastic member. In the switch operation part 10, a depression part 11 has a truncated-cone-shaped skirt part 12 expanding with separation therefrom, and a slight deflection of the skirt part forces a contact part 13 integrally formed on the depression part 11 in the skirt part 12 to make a switch. The switch operating force then deflects the depression part 12 and the contact part 13 to provide the operator with a satisfactory operation reaction.