To provide an anchor plug which can be taken out from a prepared hole.

The anchor plug includes: a tube body 2 inserted into the prepared hole formed in a fixed surface; a rotary member 3 rotatably housed in a front section within the tube body 2; a regulating structure 10 which is interposed between the tube body 2 and the rotary member 3, permits the rotary member 3 to rotate circumferentially, and regulates it to move in a tube axial direction C; an advancing member 4 which screws a rear screw section 18 formed in a rear section of the rotary member 3, and advances in the tube axial direction C within the tube body 2 by a rotation of the rotary member 3; and a bolt 5 for fixing a fixed workpiece which forms a front screw section in a front section opening of the rotary member 3 or the advancing member 4, and screws the front screw section. Furthermore, a window section 12 is formed in a rear section of the tube body 2, and an elastic blade 13, elastically deformed so that it may be housed within the tube body 3 from the window section 12 in connection with a retreat of the advancing member 4, is arranged.