The invention belongs to the technical field of levee revetment scouring prevention body structures, and relates to a levee revetment cone scouring prevention structure with a triangular cross section. The levee revetment cone scouring prevention structure is a tetrahedronal six-sided cone water-permeable framework formed by welding six rod pieces; the cross section of each rod piece is in a shapeof an equilateral triangle; for each cone vertex, corresponding three rod pieces have outward edges, and extension lines of the outer-side edges of the three rod pieces are crossed on one point on the symmetry axis of the cone. The levee revetment cone scouring prevention structure can be applied to water stopping, speed reduction, siltation promotion and sand falling promotion of riverways, riverbeds of river sections of natural riverways can be protected against scouring of current, and the safety of levee hydraulic structure facilities is guaranteed.