A paper sheet processing system comprising a paper sheet processing apparatus and a paper sheet bundle wrapping apparatus, wherein the paper sheet processing apparatus includes a taking-in unit configured to take in one paper sheet supplied at a time; a paper sheet discrimination unit configured to distinguish category of the paper sheet taken in by the taking-in unit; an accumulation part constituted so that the paper sheet may be accumulated according to the category based on the category which the paper sheet discrimination unit distinguished; a 1st binding unit configured to bind a 1st number of the paper sheets accumulated together by a 1st band at a 1st banding position to form a 1st paper sheet bundle; and a discharging mechanism configured to discharge the 1st paper sheet bundle; and wherein the paper sheet bundle wrapping apparatus includes a 1st receiving unit configured to receive the 1st paper sheet bundle discharged from the paper sheet processing apparatus; and characterized in that the paper sheet processing apparatus further includes a 1st communications unit configured to transmit category information corresponding to the category of the paper sheet included in the 1st paper sheet bundle discharged by the discharging mechanism; and the paper sheet bundle wrapping apparatus further includes a 2nd communications unit configured to receive the category information transmitted by the 1st communications unit; an accumulation mechanism configured to accumulate the 1st paper sheet bundle received by the 1st receiving unit on a 1st accumulation tray or a 2nd accumulation tray based on the category information received by the 2nd communications unit; a conveyance mechanism configured to convey a 2nd number of the 1st paper sheet bundles accumulated to the 1st accumulation tray or the 2nd accumulation tray, to a 2nd binding unit; the 2nd binding unit configured to bind the 2nd number of the 1st paper sheet bundles conveyed by the conveyance mechanism together by a 2nd band and a 3rd band to form a 2nd paper sheet bundle; a wrapping unit configured to wrap the 2nd paper sheet bundle; and a control unit configured to control the 1st receiving unit, the accumulation mechanism, the conveyance mechanism, the 2nd binding unit, and the wrapping unit; wherein the 1st receiving unit includes a plate to receive the 1st paper sheet bundle in the standing position of which side edge surface is used as a bottom; wherein the accumulation mechanism includes a slipping down part which the 1st paper sheet bundle slips down; a shutter capable of opening and closing to hold temporarily the 1st paper sheet bundle which slips down the slipping down part; a conveyor to lay the 1st paper sheet bundle slipped down by opening the shutter; a holder to hold the upper end of the 1st paper sheet bundle so that the 1st paper sheet bundle laid on the conveyor may not fall; and a category selecting unit includes a 1st accumulation conveyance part to accumulate the 1st paper sheet bundle laid on the conveyor in the standing position to the 1st accumulation tray, and a 2nd accumulation conveyance part to convey the 1st paper sheet bundle laid on the conveyor to the 1st position by the conveyor and to accumulate the 1st paper sheet bundle to the 2nd accumulation tray in the standing position; wherein the conveyance mechanism includes a 1st transportation part to move the 2nd number of the 1st paper sheet bundles in the standing position accumulated on the 1st accumulation tray to a 2nd position; a 2nd transportation part to move the 2nd number of the 1st paper sheet bundles in the standing position accumulated on the 2nd accumulation tray to a 3rd position; a 1st delivery part to deliver collectively the 2nd number of the 1st paper sheet bundles accumulated on said 1st accumulation tray moved to the 2nd position by the 1st transportation part to a lift table; a 2nd delivery part to deliver collectively the 2nd number of 1st paper sheet bundles accumulated on the 2nd accumulation tray moved to the 3rd position by the 2nd transportation part to the lift table; a lifter having the lift table to lift the lift table on which the 2nd number of the 1st paper sheet bundles passed by the 1st delivery part or the 2nd delivery part are laid; and a 3rd transportation part to convey the 2nd number of the 1st paper sheet bundles raised by the lifter to the 2nd banding unit while arranging position of the 2nd number of the 1st paper sheet bundles; and wherein the 2nd binding unit includes a 4th transportation part (71a, 71b) to convey the 2nd number of the 1st paper sheet bundles to the 2nd banding position and the 3rd banding position.