The invention belongs to the field of bridge construction and particularly relates to an overhead trestle structure built on non-covering steep bare rocks in deep rapids. The invention adopts the technical scheme that the overhead trestle specifically comprises a trestle body and steel pipe piles for supporting the trestle body, wherein the steel pipe piles are arranged on the surfaces of the steep bare rocks, bottom cavities of the steel pipe piles are connected and anchored with the steep bare rocks by anchor rods in a connected way, and the steel pipe piles, the steep bare rocks and the anchor rods are fixedly connected into an integral structure by a poured underwater concrete layer. The overhead trestle structure has the advantages that the steel pipe piles are connected with the surfaces of the steep bare rocks by a grouted and rock-socketed anchor rod structure, so that the steel pipe piles are firmly anchored to the surfaces of the steep bare rocks by the holding force of underwater concrete pulp andwith the holding force of the anchor rods, pile bottom concrete and river bed rocks; and the construction has a short period, is at a low cost and is safe and efficient.