The invention provides a water decomposition combustion air heat conducting and supplying furnace which comprises a water containing furnace body (1). The water containing furnace body (1) is formed by overlaying three identical structures. An intermittent heat-resisting heating ion infrared light energy receiving and reflecting screen board (4) is correspondingly overlaid on a thermal power radiating surface of the circumference of the outer wall of the inner side of the water containing furnace body (1). A hearth (2) surrounded by the light energy receiving and reflecting screen board (4) is merged with the water containing furnace body (1). A sealed internal combustion burner (6) provided with three layers of identical structures is arranged in the hearth (2). The upper surface of the top of the furnace body (1) is connected with a thermal power heat collecting, heat expanding and heat dissipation mixed secondary combustion chamber (12) which is arranged on the upper portion of the hearth (2). Air inlet and outlet heat supplying ports (10) are oppositely formed in the left portion and the right portion of the middle of the combustion chamber (12). A circle of steam centrifugal drying flow divider (13) is arranged on the upper portion of an inner cavity of the combustion chamber (12). A steam distributor (3) is located on the lower portion of the hearth (2) and arranged on the outer side of the lower layer of the furnace body (1). Steam generated by the furnace body (1) is combined with primary energy (fuel gas) through flow dividing and distribution so as to be subjected to a catalytic reaction for decomposition and modification, and accordingly, the steam is converted into mixed energy mainly relying on hydrogen energy and can be directly combusted in a hearth combustion system.