To provide a strip transport roll, a method for transporting the strip and a continuous type heat treatment furnace which dispense with a motor for rotating the roll and realize stable transport of a extremely thin strip without possibility of causing scratching caused by slip and without causing bulging at the central part of the strip and the warping.

The strip transport roll is provided with an outer barrel body 2 in contact with the strip 1, an inner barrel body 3 at the inner surface side of the outer barrel body 2, and, on the surface of the inner barrel body 3, gas jetting holes 5 for floating up the outer barrel body 2 by jetting the gas toward the inner surface of the outer barrel body 2 so that the outer barrel body 2 is not in contact with the inner barrel body 3.