The invention provides a corrugated paper board overturning machine and a full-automatic corrugated paper board overturning and staggered-stacking machine, and belongs to the technical field of corrugated paper board production equipment. The corrugated paper board overturning machine comprises a machine frame and an overturning assembly; the overturning assembly comprises an overturning body and two conveying parts; the overturning body is rotatably connected to the machine frame around a first rotating shaft; and the two conveying parts are slidably connected to the overturning body in the radial direction of the first rotating shaft, can get close to or keep far away from each other, are oppositely arranged and form a conveying channel suitable for conveying corrugated paper boards. The corrugated paper board overturning machine has the function of automatically overturning the corrugated paper boards, manual overturning is not needed in the whole process, the efficiency is high, due to the overturning function of the corrugated paper board overturning machine, the overturning effect is good, and the overall use effect is good. The full-automatic corrugated paper board overturning and staggered-stacking machine comprises the corrugated paper board overturning machine and has all the functions of the corrugated paper board overturning machine.