Disclosed is a multi-use, large-module gear milling machine, at least comprising: a milling machine body; a workbench fixedly connected on the milling machine body and arranged along the milling machine body; a flat rotating platform for sandwiching a disc-shaped gear, wherein the flat rotating platform is eccentrically mounted in the workbench and the surface of the flat rotating platform is basically of equal height to the workbench; an upright rotating platform provided at one end of the workbench, a centre frame or tailstock being provided at the other end of the workbench, wherein the centre frame or tailstock has the same axis as the upright rotating platform, and the upright rotating platform cooperates with the centre frame or tailstock to sandwich a shaft gear; and a fork-shaped cutter saddle for mounting a disc-shaped milling cutter, wherein the fork-shaped cutter saddle is provided on a machine base in such a way as to enable same to be able to move with three translational degrees of freedom relative to the workpiece and to be able to make any adjustment to the included angle between the axis of a cutting tool and the axis of the workpiece, the machine base being connected on the milling machine body.