A medium stacking sheet installed on a rotation shaft of a medium separating and stacking apparatus for stacking or dispensing a medium, comprising: a body fixed to the rotation shaft and having a plurality of rotation holes which are spaced apart from each other in a rotation direction of the rotation shaft; and a plurality of vanes each including a vane pin rotatably installed in a corresponding rotation hole and a vane piece coupled to the vane pin to stack the medium, characterized in that the body further includes: a support plate having a central hole to which the rotation shaft is coupled, the rotation holes being disposed in an edge portion of the support plate; a plurality of stopper bump portions provided to be circumferentially spaced apart from each other in a central portion of the support plate; and a plurality of stopper groove portions each of which is formed between the adjacent stopper bump portions so that at least a portion of the vane piece is rotated within a predetermined angular range when the vane piece is unfolded, wherein the vane piece includes: a vane portion; a coupling portion provided at one end of the vane portion to be coupled to the vane pin; a stopper portion protruded from the coupling portion, the stopper portion being located in each of the stopper groove portions of the body to limit rotation of the vane piece; and a protruding portion formed to protrude from the other end of the vane portion in a direction perpendicular to an extension direction of the vane portion. a body fixed to the rotation shaft and having a plurality of rotation holes which are spaced apart from each other in a rotation direction of the rotation shaft; and a plurality of vanes each including a vane pin rotatably installed in a corresponding rotation hole and a vane piece coupled to the vane pin to stack the medium, characterized in that the body further includes: a support plate having a central hole to which the rotation shaft is coupled, the rotation holes being disposed in an edge portion of the support plate; a plurality of stopper bump portions provided to be circumferentially spaced apart from each other in a central portion of the support plate; and a plurality of stopper groove portions each of which is formed between the adjacent stopper bump portions so that at least a portion of the vane piece is rotated within a predetermined angular range when the vane piece is unfolded, wherein the vane piece includes: a vane portion; a coupling portion provided at one end of the vane portion to be coupled to the vane pin; a stopper portion protruded from the coupling portion, the stopper portion being located in each of the stopper groove portions of the body to limit rotation of the vane piece; and a protruding portion formed to protrude from the other end of the vane portion in a direction perpendicular to an extension direction of the vane portion. a support plate having a central hole to which the rotation shaft is coupled, the rotation holes being disposed in an edge portion of the support plate; a plurality of stopper bump portions provided to be circumferentially spaced apart from each other in a central portion of the support plate; and a plurality of stopper groove portions each of which is formed between the adjacent stopper bump portions so that at least a portion of the vane piece is rotated within a predetermined angular range when the vane piece is unfolded, wherein the vane piece includes: a vane portion; a coupling portion provided at one end of the vane portion to be coupled to the vane pin; a stopper portion protruded from the coupling portion, the stopper portion being located in each of the stopper groove portions of the body to limit rotation of the vane piece; and a protruding portion formed to protrude from the other end of the vane portion in a direction perpendicular to an extension direction of the vane portion. a vane portion; a coupling portion provided at one end of the vane portion to be coupled to the vane pin; a stopper portion protruded from the coupling portion, the stopper portion being located in each of the stopper groove portions of the body to limit rotation of the vane piece; and a protruding portion formed to protrude from the other end of the vane portion in a direction perpendicular to an extension direction of the vane portion.