the current mobile synchronous replication conflict resolution methods in mobile users increase gradually, under the condition of exercise time increasing, will cause a lot of things rolled back, lead to lower efficiency, less conflict resolution performance.For this, put forward a new kind of distributed heterogeneous database in mobile synchronous replication conflict resolution method, gives the distributed heterogeneous database structure, will host all merged into two logical entity, for synchronous replication mobile database system model.Based on the concept of ontology and relationship to describe the knowledge in the field of a unified to the framework of an ontology, based on the theories of language semiology, describe architecture of ontology in five yuan group.Through ontology in the field of a transaction or the concept of the semantic relationships between different components and other parts, through the relationship of the distributed heterogeneous database in mobile synchronous replication conflicts is described.The experimental results show that the proposed method is not only high efficiency, and has a high conflict resolution performance.