Abstract: The vibration damping blade for fluid of the present invention has an integrally formed wedge damper, in which a thickness h(x) at a distance x from an imaginary line outside of an outer edge is h(x)=?xn (where ? is a positive constant, and n is a real number of 1 or more). As a result, it is possible to offer a vibration damping blade for fluid which can be easily manufactured, and which obtains damping effects across a wide range of frequency regions without disturbing the flow of fluid.