To easily and surely manage cleaning objects by attaching a data carrier to the cleaning object at the time of receiving it and managing the cleaning object based on reception information, agent information and individual information stored in the data carrier.

The cleaning object to which a slave tag Tc is attached is transferred to a cleaning process together with a bag B and cleaned, and a finished article is sorted for each agent and each reception No. and transferred to a shipping area. A host computer 6 stores the contents of a reception file transmitted from a first personal computer 5 in a management file and transmits the contents of the management file to a second personal computer 7. When an operator brings a third reader-writer 70 closer to a master tag T attached to the bag B, the reception No. is read from the master tag T and an article inspection screen is displayed on a third display device 71. Thus, the need of sorting work in a shop is eliminated.