The invention discloses a novel medical automatic splitting machine. Two cutter wheels are symmetrically arranged on the two sides of a rack, are connected through a tape cutter, and are driven by a cutter wheel driving device to rotate; a feeding wheel is movably arranged on the rack through a feeding wheel pressure adjusting mechanism; a feeding driving device is used for driving the feeding wheel to rotate; an upper fixing rod is movably arranged on the rack through a gap adjusting mechanism. The machine has the advantages of ingenious and rational structural design, capability of quickly achieving the purpose of skin and flesh cutting, good cutting effect, high speed, capability of achieving required cutting thickness by adjusting the gap adjusting mechanism, high flexibility, capabilities of cutting thin slices with thickness of being less than 0.5 mm and guaranteeing uniformity during cutting, high precision, capability of effectively improving the utilization rate, simple and compact integral structure, convenience and easiness in use and capabilities of effectively reducing the labor intensity and improving the working efficiency, can be widely applied to the fields of metal skin grafting and other thin slice application, and contributes to wide popularization and application.