Tool for accurately positioning drain hole of retaining wall

The utility model provides a tool for accurately positioning a retaining wall drain hole, which comprises a ruler seat arranged on a retaining wall template, a measuring ruler arranged perpendicular to the ruler seat, two measuring tapes with scales, a box staff and a drain pipe, the ruler seat is parallel to the edge of the retaining wall template, the two measuring tapes are arranged perpendicular to the measuring ruler, and the measuring ruler is arranged perpendicular to the box staff. The box staff is arranged at the bottom of the measuring tape, and the water drainage pipe and the box staff are arranged in parallel. The ruler seat is parallel to the edge of the retaining wall template and is perpendicular to the measuring ruler, the measuring ruler is ensured to be parallel to the section of the retaining wall, the horizontal bubbles are arranged on the measuring ruler, the elevation of the upper part of the measuring ruler is ensured to be consistent, and the inclination angle of the water drain pipe c