The invention discloses an automatic defogging heat exchange method and structure driven by large-strain cantilever beam curvature. and the method and the structure are characterized in that water drops condensed on the surface of a large-strain cantilever beam curved panel moves directionally to one side of the large-strain cantilever beam curved panel and are enriched under the action of the curvature gradient of the large-strain cantilever beam curved panel, then water suction guide lines with hydrophilic surfaces or water drain pipes arranged at an enriched position are utilized, so that the water drops are separated from the large-strain cantilever beam curved panel, and therefore automatic defogging is realized; and the large-strain cantilever beam curved panel in the adopted structure sinks inwards or protrudes outwards, the multiple large-strain cantilever beam curved panels are annularly arranged in uniform angle to form an annular closed finned pipe, and the adjacent large-strain cantilever beam curved panels are in sealed connection. The heat exchang e method and the structure have the advantages of being high in heat exchange efficiency, simple in structure, free of maintenance, free of energy consumption, convenient to manufacture, light and reliable.