A paper sheet handling apparatus, comprising: a housing; a first unit, a second unit, and a joint module(130, 230); the first unit being disposed within the housing and used to receive and dispense a paper sheet; the second unit being disposed within the housing and used to store the paper sheet, at least one of the first unit and the second unit being a slidable paper sheet module that is slidably disposed at a rail of the housing and including a module channel; and the joint module (130, 230) being disposed between the first unit and the second unit, and being characterized in that the joint module (130, 230) comprises: a main body (131, 231) located at a side of the rail; a moving shaft (134, 234) slidably connected to the main body (131, 231) and configured to slide towards or away from the rail; a joint conveying channel (132, 232) connected to the moving shaft (134, 234); and a limiting member (131a, 231a) disposed at the main body (131, 231) and configured to limit the moving shaft (134, 234) to move between an outer point and an inner point, wherein the outer point is located closer to the rail than to the inner point; wherein when the moving shaft (134, 234) moves to the outer point, the joint conveying channel (132, 232) protrudes from a surface of the joint module (130, 230) facing towards the slidable paper sheet module, so as to dock with the module channel for conveying the paper sheet. a housing; a first unit, a second unit, and a joint module(130, 230); the first unit being disposed within the housing and used to receive and dispense a paper sheet; the second unit being disposed within the housing and used to store the paper sheet, at least one of the first unit and the second unit being a slidable paper sheet module that is slidably disposed at a rail of the housing and including a module channel; and the joint module (130, 230) being disposed between the first unit and the second unit, and being characterized in that the joint module (130, 230) comprises: a main body (131, 231) located at a side of the rail; a moving shaft (134, 234) slidably connected to the main body (131, 231) and configured to slide towards or away from the rail; a joint conveying channel (132, 232) connected to the moving shaft (134, 234); and a limiting member (131a, 231a) disposed at the main body (131, 231) and configured to limit the moving shaft (134, 234) to move between an outer point and an inner point, wherein the outer point is located closer to the rail than to the inner point; a main body (131, 231) located at a side of the rail; a moving shaft (134, 234) slidably connected to the main body (131, 231) and configured to slide towards or away from the rail; a joint conveying channel (132, 232) connected to the moving shaft (134, 234); and a limiting member (131a, 231a) disposed at the main body (131, 231) and configured to limit the moving shaft (134, 234) to move between an outer point and an inner point, wherein the outer point is located closer to the rail than to the inner point; wherein when the moving shaft (134, 234) moves to the outer point, the joint conveying channel (132, 232) protrudes from a surface of the joint module (130, 230) facing towards the slidable paper sheet module, so as to dock with the module channel for conveying the paper sheet.