To provide a fluid resistance-reducing structure for reducing fluid resistance on a ship, in a fluid passage such as a piping and in an intake pipe in a power station.

This fluid resistance-reducing structure is a member which is used by being always or intermittently immersed in a fluid, and has at least a pair of electrically conductive porous layers provided with electric conductivity and water repellency on the surface of the member to improve water repellency by providing fine pores on the surface.