To provide a rotary table device for a drilling machine which, when extracting the drilling machine becoming long with connected extended bodies from a drilled hole, allows the extended bodies to be extracted gradually by removing the extended bodies one after the other from the top side, so as to achieve the drilling work even at places where a large space cannot be secured above or around a drilling part.

The rotary table device for the drilling machine (A) includes a lifting movable base (4) installed on a table base (1), a drive bush (2) which is mounted on the table base (1) and rotates a down-the-hole hammer, a connecting pin (7) which fixes and releases the down-the-hole hammer on/from the lifting movable base (4), an anti-drop stopper (8) which engages and releases the down-the-hole hammer to/from the drive bush (2), and a bore-witching instrument (6) which can pass a hammer extension body through when the bore is small, while passing a hammer body and the drive bush (2) through when the bore is large.