In a paper ejection device for a stencil printing device provided with a lifting member for producing a curvature in each sheet of ejected printing paper as seen in a cross section perpendicular to the direction of paper ejection, the lifting member is allowed to move at least between a first position which is relatively retracted from the paper ejection passage and a second position which relatively protrudes into the paper ejection passage. The movement of the lifting member may be effected according to the size or the kind of the printing paper or depending on whether a sorter is connected to the printer or not. Thus, an appropriate curvature can be given to the ejected printing paper without requiring any manual work by the user. Thus, a satisfactory paper ejecting operation can be ensured at all times without requiring any manual work by the operator of the stencil printing device.