A cleansing system for automatically cleansing a workpiece through cleansing tanks and drying tanks in steps to process and assemble the workpiece, an ultrasonic cleansing apparatus, a vacuum drying apparatus, a cleansing apparatus, a cleansing tank, a drying tank and a production system. For example, a descending air current with a sufficient wind velocity/air capacity is obtained, a cleansing time is reduced and unevenness in cleansing of the workpiece is suppressed without bringing contaminations in a preceding tank into a following tank. The present invention has a carriage device (21) which carries a workpiece (2) to a predetermined position, a plurality of workpiece processing portions (23) arranged around the carriage device (21) in a radial pattern, a drive portion which drives the carriage device (21), a workpiece supply portion (25) which supplies the workpiece (2), and a workpiece discharge portion (26) which discharges the workpiece (2). It is preferable that the number of carriage arms (22) of the carriage device (21) for grasping, mounting thereon or sucking the workpiece (2) and carrying it is not less than the number of the workpiece processing portions (23).