To provide a patch board for boring holes by a drill on a printed circuit board which is excellent in handleability and can improve wall surface roughness of a hole to be bored.

A paper-based thermosetting resin laminate plate with a nonaqueous lubricant comprising a sole substance or a mixture of a polyoxyethylene alkylene block polymer and a polyoxyethylene alkylamine is used as the patch board. The nonaqueous lubricant of the paper-based thermosetting resin laminate plate is specified to be 5 to 100 pts.wt. for the resin, and a total of the nonaqueous lubricant and a thermosetting resin in the resin laminate plate is specified to be in a range of 20 to 80 wt.%.