In equipment maintenance activities, a great amount of maintenance work have to be completed by more than one person in cooperation. In this case, an object may be operated equally by multi-users simultaneously, which is called "concurrent operation". For efficiently handling conflict, many concurrency control methods were analyzed. Then the combination of multiple concurrency control mechanisms was used and a set of effective conflict solution was put forward to shorten the time of conflict resolution. Finally, the feasibility and availability of the method is verified through a practical instance application.