A keyswitch includes a cap, a board, first and second support members rotatably connected to the cap and the board, a seesaw member, and a magnetic member. The seesaw member movably supports at least one of the cap and the first and second support members. The magnetic member is disposed on the board corresponding to the seesaw member. When the cap is pressed, the at least one of the cap and the first and second support members drives the seesaw member to raise and the cap moves from a non-pressed position to a pressed position. When the cap is released, a magnetic attraction force between the magnetic member and the seesaw member drives the seesaw member to raise for lifting the at least one of the cap and the first and second support members, so as to move the cap back to the non-pressed position.