In this paper, a strategy for view maintenance in peer data management systems (PDMSs) is proposed. First, a hybrid peer architecture is presented, in which peers prefer peer-to-peer architecture to super-peer based architecture. Then, if a view is reformulated along a semantic path, it can retrieve data from many data sources. So the peer view, local view and global view are proposed. A global view maintenance is turned into the maintenance of all related local views if join operations are confined in each local PDMS, and a query can gain the same result if it is posed over any peer in the same semantic path. Furthermore, a view may be a conjunctive query which relates to several tables in PDMSs. According to the application, Mork’s rules are extended. Based on the new rule system, the update data are propagated in PDMS. According to the new rule system, a view maintenance algorithm in PDMS is proposed. Finally, simulation experiments are carried out in the SPDMS (schema-mapping-based PDMS). The simulation results show that the proposed view maintenance strategy has better performance than that of Mork’s.