PURPOSE: To bore many holes in a ceiling face efficiently, by providing a Y-axis positioning body through a X-axis positioning body in the upper face of an apparatus body which includes a moving-free carriage, and providing a boring body above this Y-axis positioning body capably of rising and falling freely.

CONSTITUTION: This boring apparatus is utilized in order to bore holes for bolts in a ceiling face and so on, when a cable rack or a cable tray etc., is attached to the ceiling face or a beam etc., by means hanging bolts, and provided with an apparatus body 1 in which a frame 7 is erected on a carriage 9 provided with castors 40. X-axis and Y-axis positioning body 2, 3 are provided being piled upward one by through a table attaching stand 13 on a working floor 14 which is provided on the upper face of the frame 7, and plural boring bodies 5 are attached to posts 27 which are provided on the Y-axis positioning body 3 through elevating means 6. Anchor supporting devices 10 and a hammer for driving anchors are attached through this elevating means 6. Therefore it is possible to bore plural holes simultaneously.