To facilitate mounting work, and to provide an excellent click feeling by a simple structure without adding another component, in a slide structure of a button of an electronic apparatus.

A camera changeover button (slide button) 13 is provided with a button body 28 where a knob part 27 for executing slide operation is projected from a surface thereof, and leg parts 30 sandwiching a switch lever for changeover of a cellular phone 1 (electronic apparatus, portable communication apparatus) on the back side of the button body 28. A sliding through-hole 21 for sliding the camera changeover button 13 is formed on a back-side cabinet (electronic apparatus body) 20 covering the cellular phone. The sliding through-hole 21 is provided with a flexible part 23 (elastic means) providing a click feeling to the camera changeover button 13 by elastically deforming when the camera changeover button 13 is slid.