To provide a window shape and freezing preventive cover which is easy in attaching-detaching the cover, reduces manufacturing costs and compactly stored by folding-up, by surely covering a roof, windshield, rear and side glass of an automobile, since lacking or risk is caused in any of an increase in the manufacturing costs, simplicity in attachment-detachment and compact storage performance, when a freezing preventive cover of a conventional automobile is for preventing snow and frost only by windshield glass and rear window glass and a magnet, a string, a hook and a bone-shaped bar are arranged.

A reverse pleat is arranged on a cover reverse surface for covering the roof, the windshield, rear and side glass of the automobile, and a pleat is arranged in a side glass cover tip.