PURPOSE: To efficiently manage changing processing as the whole system by reflecting the changed result of a site having higher priority order when the changing processing of copied data is executed on plural sites in the distributing system in parallel.

CONSTITUTION: In this distributing processing system consisting of a data management computer 1 for concentrically managing data and distributed computers arranged on plural sites, a data record 8 is divided into plural areas 10 consisting of one or more items and each area 10 is provided with a changing site column 11 to be an item for recording the changing site of the area 10 and a counter 9 for expressing the version of data. The computer 1 is provided with an area management table 4 recording the priority order 5 of respective sites corresponding to the changes of respective areas 10 in the record 8 and a primary file 6 for storing master data 12 to be concentrically managed. A distributed computer 2 in each site is provided with a distributed file 7 for storing the copy data of the master data 12 which are prepared at the time of changing data and changed data 14 changed by the computer 2.