The paper sheet handling machine includes a paper sheet slot; a pair of conveyor assemblies; a moving mechanism; a detection unit; and a determination module. Upon determination of the possible conveyance by the determination module, the moving mechanism moves the first conveyor assembly and the second conveyor assembly in the mutually approaching direction to hold the paper sheet, Upon determination of the impossible conveyance by the determination module, the moving mechanism moves the first conveyor assembly and the second conveyor assembly in the mutually away direction to release the paper sheet.
