The utility model discloses a transmission line precast tubular pile waters concrete foundation outward, including precast tubular pile main part (1) and mounting flange board (2), precast tubular pile main part (1) outside sets up supporting layer (3), and the mounting flange board sets up a plurality of through -holes on (2), runs through in the through -hole to set up rag bolt (4), and the upper end and the lower extreme of rag bolt (4) all set up stop nut (5), and the upper end in precast tubular pile main part (1) is fixed in mounting flange board (2). The utility model discloses a precast tubular pile main part sets up the supporting layer as basic main part atress structure between basis drilling and precast tubular pile main part, avoid basic reinforcement, the on -the -spot concrete mixing work load of reduction in the field fabrication precast tubular pile main part manufacturing process, is convenient for to the inner wall NULL of precast tubular pile main part effective save material, reduce cost simultaneously for the construction progress.