To provide a protective cover of a portable electronic terminal to enable the user to instal this portable terminal on an external object without incurring additional costs to the user, and a portable electronic terminal thereof.

The portable electronic terminal protective cover 1 has a case and a display section formed on the upper surface of this case. This cover has a top plate 6 covering the display section, a hook 7 formed extending from the top plate 6 edge to hook the top plate 6 to the projection on the external object, and stoppers 9 and fitting projections 15 to support the case on the top plate 6.