A clamshell type electronic device includes: a first case; a second case; a hinge portion that rotatably couples the first case and the second case to be foldable; a battery chamber that is provided in the hinge portion for accommodating a battery; a battery cover that covers the battery chamber; and a stylus holder that is provided on an inner face of the battery cover for accommodating a stylus to be removable therefrom by drawing out the stylus from the stylus holder.