Pipe drilling aid

The utility model relates to an aid device for drilling a hole on a pipe body, which is characterized in that each corner position part of a positioning seat is provided with screw holes, the bottom surface of each corner is respectively screwed with a butt stopper block, and the arc part of the bottom surface of each butt stopper block is provided with a continuous rack; the seat surface of the positioning seat is provided with a long hole through which a universal foot seat penetrates, the end segment of the universal foot seat is provided with screw threads which penetrate into the long hole, the top end of the universal foot seat is provided with a ball seat hole which contents a universal shaft bead, and the universal shaft bead is strung with one end chain hole of a fixing chain body from the universal foot seat. The utility model is convenient in operation, can automatically position and drill the hole, and can effectively tighten the pipe body.