To provide a continuous heat treatment furnace superior in energy saving performance and stability in transporting, and capable of easily measuring a temperature of a substrate.

This continuous heat treatment furnace for performing heat treatment on a functional film material while transporting the substrate 1 provided with the functional film material on a base, comprises a rotating shaft 3 vertically mounted and rotated by a driving device, and a transporting tool 6 having beams 5 or wires radially extending from the rotating shaft 3 in the horizontal direction, in plural sets of at least two each, and further comprises a transporting mechanism for transporting the substrate 1 loaded on the transporting tool 6 by continuously or intermittently rotating the transporting tool 6 in the horizontal direction by rotating the rotating shaft 3.