The invention provides an offline data version conflict resolution method for supporting concurrent cooperation. The offline data version conflict resolution method for supporting concurrent cooperation comprises the following steps: receiving an editing request to edit a database, according to the occurrence probability of a conflict in a application layer, adopting a corresponding conflict resolution method to determine whether the editing request has the conflict or not, and after determining that the editing request has no conflict, processing the database in accordance with the editing request. When the occurrence probability of the conflict is low, a method based on a mixed conflict detection is adopted, and the mixed conflict detection method can effectively shorten the time of the conflict detection. When the occurrence probability of the conflict is high, a method based on conflict avoidance is adopted, the user writing data need to obtain the edit tag of a correlation table firstly, and thus not only the conflict can be avoided, but also other users taking an application offline are allowed to operate other modules of a software at the same time.