Abstract: A keyboard, a driving method and an assembling method for the keyboard, and an electronic device are described. The keyboard includes a base plate, on which a first magnetic member and a second magnetic member are formed; a keycap, disposed above the base plate; and an X-shaped holder disposed between the base plate and the keycap for supporting the keycap, and a third permanent magnet is provided on the sliding end, wherein the keycap is movable between a first position and a second position lower than the first position along a direction substantially perpendicular to the base plate, and wherein the third permanent magnet is in a position substantially opposite to the second magnetic member when the keycap is in the first position, and the third permanent magnet slides to a position substantially opposite to the first magnetic member when the keycap is in the second position.