A cover opening and closing apparatus of an electronic appliance is provided. The apparatus includes a body comprising a container-shaped housing with an open side configured to insert and remove at least one electronic component, a cover configured to open and close an opening of the housing, and a moving hinge hinged to the cover, received in the body, and movable. When the cover rotates over a threshold angle, the cover rotates on a rotation axis being a protrusion contacting the body and a hinge connector between the cover away from the rotation axis and the moving hinge moves out of the body.