An exemplary foldable electronic device includes a first cover, a second cover rotatably coupled to the first cover, a hooking portion, and a latching portion. The second cover defines an engaging hole. The hooking portion is positioned on the first cover, and the latching portion is positioned on the second cover. The hooking portion includes a deformable arm configured to engage in or disengage from the engaging hole of the second cover. The latching portion includes a slidable assembly configured to slide relative to the main body thereby deforming the arm to disengage from the engaging hole.