To provide an inversion stacking apparatus capable of highly efficiently inverting and stacking a plurality of inversion stacking targets such as corrugated board sheets.

The inversion stacking apparatus includes an inversion stacking target carrying-in part for carrying-in a plurality of sheets of inversion stacking objects in a stacked state; revolving extrusion means for revolving the inversion stacking target carried into the inversion stacking target carrying-in part by 90° to be erected and extruding the target toward ahead; conveyance means of, while ahead inclining the inversion stacking objects extruded by the revolving stacking targets extruded by the revolving extrusion means one by one, conveying the target ahead with the end of the target overlapped with another inversion stacking target adjacent to the other in a conveyance direction; and a stacking target carrying-out part for receiving and stacking the inversion stacking objects conveyed by the conveyance means one by one.