To provide an anti-freezing structure construction for folded roof slab eaves edge, capable of definitely preventing freezing and assuring easy roof construction.

A planar heating body 3 is overlapped to the bottom surface of the eaves edge of a folded slab structure as a roofing member for a building. A folded line-shaped 4 metal fittings 4 along the bottom surface shape, having the same corrugated with the folded slab 2, is overlapped to the bottom surface of the planar heating body 3. This metal fitting 4 is attached to a lateral frame 1 by a fixing device 5, penetrating though this folded roof slab 2 at a crest portion 2a of the folded slab 2. This metal fittings 4 can be substituted for an eaves frame as a decorative member for the folded roof slab 2.