PROBLEM TO BE SOLVED: To provide a paper sheet processing apparatus capable of eliminating a problem that, in a prior art, it is necessary to draw a tray from the apparatus and rotate a transportation passage unit on an upper portion of a stacker so as to be raised when drawing the tray from the stacker, thereby, there was lacking in convenience.SOLUTION: A paper money processing apparatus 1 comprises: a customer-service mechanism part 40 for delivering paper sheets; a counting part 10 for counting the number of the paper sheets; a stacker 20 for storing the paper sheets; transportation passages 10a-10e, 40a, and 40b for transporting the paper sheets to the customer-service mechanism part 40, the counting part 10 and the stacker 20. The paper money processing apparatus 1 further comprises: a connection guide 51 provided between the transportation passages 10a-10e and the stacker 20 for delivering the paper sheets; and a motor 62, a cam 59, and a solenoid S for switching a connection state, where the paper sheets can be delivered by connecting the connection guide 51 with the transportation passages 10a-10e and the stacker 20, and a retracted state where the connection guide 51 is disconnected.