A paper sheet diverter comprising: a diversion member which is rotatably provided at a junction portion of transport paths (11, 12, 13) in at least three directions for transporting paper sheets; a driving unit for rotationally moving the diversion member; and a control unit for controlling the driving unit to make the diversion member rotationally move to at least three stopping positions including a first stopping position connecting a first transport path and a second transport path to form a first transport passage, a second stopping position connecting the first transport path and a third transport path to form a second transport passage and a third stopping position connecting the second transport path and the third transport path other than the first transport path to form a third transport passage, characterized in that the diversion member is substantially triangular, and one end of which the acute tip is formed to taper off, the other end of which the rear end is formed, and transport faces for transporting the paper sheets in both side faces extending from the one end to the other end, wherein a rotation angle of the diversion member between the first stopping position and the second stopping position is smaller than that between the first stopping position and the third stopping position and that between the second stopping position and the third stopping position, whereby a rotation time of the diversion member between the first stopping position and the second stopping position is shorter than that between the first stopping position and the third stopping position and that between the second stopping position and the third stopping position. a diversion member which is rotatably provided at a junction portion of transport paths (11, 12, 13) in at least three directions for transporting paper sheets; a driving unit for rotationally moving the diversion member; and a control unit for controlling the driving unit to make the diversion member rotationally move to at least three stopping positions including a first stopping position connecting a first transport path and a second transport path to form a first transport passage, a second stopping position connecting the first transport path and a third transport path to form a second transport passage and a third stopping position connecting the second transport path and the third transport path other than the first transport path to form a third transport passage, characterized in that the diversion member is substantially triangular, and one end of which the acute tip is formed to taper off, the other end of which the rear end is formed, and transport faces for transporting the paper sheets in both side faces extending from the one end to the other end, wherein a rotation angle of the diversion member between the first stopping position and the second stopping position is smaller than that between the first stopping position and the third stopping position and that between the second stopping position and the third stopping position, whereby a rotation time of the diversion member between the first stopping position and the second stopping position is shorter than that between the first stopping position and the third stopping position and that between the second stopping position and the third stopping position.