Disclosed is an orthopaedics nail-removing guiding device. The side surface of a base is hinged to a vertical adjusting rod through a main positioning bolt, the vertical adjusting rod is relatively rotationally and movably sleeved by a vertical slide sleeve, the side wall of the vertical slide sleeve is in threaded connection with a vertical positioning bolt capable of positioning the vertical slide sleeve on the vertical adjusting rod, the inner end of the vertical positioning bolt abuts against the side surface of the vertical adjusting rod, one side of the vertical positioning bolt is fixedly connected with a transverse adjusting rod, the transverse adjusting rod is relatively rotationally and movably sleeved by a transverse slide sleeve, the side wall of the transverse slide sleeve is in threaded connection with a transverse positioning bolt capable of positioning the transverse slide sleeve on the transverse adjusting rod, the inner end of the transverse positioning bolt adjusts against the side surface of the transverse adjusting rod, the outer surface of the transverse slide sleeve is relatively rotationally connected with a sleeve, and the sleeve is disposed above the base. An inner core is movably plugged into the sleeve, the inner core comprises a cylindrical shell, the outer side wall of the cylindrical shell is in interference fit connection with the inner side wall of the sleeve, the outer surface of the edge of the upper port of the cylindrical shell is integrally fixedly connected with a support bench, and the support bench is disposed above the upper port of the sleeve.