A method for producing an unsaturated hydrocarbon comprising: a dehydrogenation step of contacting a raw material gas containing at least one hydrocarbon selected from a group consisting of alkanes and olefins with a dehydrogenation catalyst containing a group 14 metal element and Pt to obtain a product gas containing at least one unsaturated hydrocarbon selected from the group consisting of olefins and conjugated dienes, and a regeneration step of contacting the dehydrogenation catalyst subjected to the dehydrogenation step with a regenerating gas containing molecular oxygen under a temperature condition of 310 to 450° C.