There is disclosed a switching element including a first input/output electrode, a movable portion which repeats contact/non-contact with respect to the first input/output electrode, a second input/output electrode connected with the movable portion, a floating gate electrode which is coupled with the movable portion through an insulating layer and in which electric charge is stored, and a first gate electrode which generates an electrostatic force between itself and the floating gate electrode to control an operation of the movable portion.