A power generation structure according to an embodiment of the present invention includes terrain features spaced apart from each other at a first interval to form a watercourse through which water can move in front and rear directions; watercourse banks having a width narrower than the first interval and disposed on the watercourse to form equal-width watercourses having a constant width between the terrain features; a first water collecting bank disposed on the watercourse and formed in the shape of a point extending from a front end of the watercourse bank in a moving direction of a tidal current, with the width being gradually decreased toward the front of the equal-width watercourse; and a second water collecting bank disposed on the watercourse and formed in the shape of a point extending from a rear end of the watercourse bank in the moving direction of the tidal current, with the width being gradually decreased toward the rear of the equal-width watercourse.
