The invention discloses a macro-micro dual-drive heavy-load cutting position changing machine. The macro-micro dual-drive heavy-load cutting position changing machine is characterized in that a platform-surface overturning mechanism of a working platform consists of a macromotion part of an outer overturning body and a micromotion part of an inner overturning body which are connected in series; the macromotion part is driven by two hydraulic cylinders; the micromotion part is driven by two lead screws; the outer overturning body is arranged at the outer side of a vertical column by a bearing; the two ends of the hydraulic cylinders are respectively arranged on a base and the outer turning body; the outer overturning body is driven to carry out fast and large-angle overturning relative to the base so as to realize macromotion rough adjustment of the platform-surface overturning angle of the working platform; the inner overturning body is arranged at the middle part of the vertical column, an overturning shaft of the inner overturning body is concentric to an overturning shaft of the outer overturning body; the lead screws are fixed on the outer overturning body; lead screw nuts are arranged on the inner overturning body; the lead screws drive the inner overturning body to carry out small-angle overturning relative to the outer overturning body so as to realize micromotion fine adjustment of the platform-surface overturning angle of the working platform; and the platform surface of the working platform is arranged on the inner overturning body and is driven by a torque motor through a gear and a gear ring. The macro-micro dual-drive heavy-load cutting position changing machine disclosed by the invention has the beneficial effects that the range of the overturning angle is 0-70 degrees and the positioning accuracy can be 8''.