The invention discloses a T160 bulldozer blade drilling tool. For machining of a drilling part of a T160 bulldozer blade, due to the fact that a special drilling tool is not provided originally, drilling can be achieved only by scribing, the production efficiency is low, moreover, the error of a machined part is relatively large, and the use of the part is affected. The T160 bulldozer blade drilling special tool is characterized in that the pressing connection between a base and a workbench is realized through bolts, a bottom plate and a drill jig are connected into a whole through pins, screws, a positioning plate and a base plate, the positioning plate and positioning nails are used for realizing positioning of a workpiece, the base and a drilling template, meanwhile, a fastening bolt isused for pressing the workpiece, so that the workpiece is guaranteed to be clamped, then positioning pins are used for penetrating through the drilling template and the workpiece, so that the relative rotation between the workpiece and the drilling template is prevented, then the drilling process of the blade is guaranteed to be carried out smoothly, the machining errors are reduced, and moreover, the machining efficiency is greatly improved.