As the resource public key infrastructure (RPKI) coverage of the inter-domain network expands, the consistency of RPKI data synchronization in the actual deployment, the risk of operational errors and abuse of authority power have become major obstacles to the full deployment of RPKI. This study presents a scheme for detecting conflicts of updating RPKI cache based on fact ownership of route origin. This scheme uses reverse RTR protocol and multi-layer transmission architecture of RPKI data to collect and synchronize fact route origin information. Then, it compares fact route origin information and RPKI cache update data to detect conflicting data of RPKI cache update, which ensures authenticity and effectiveness of RPKI cache. Finally, the data synchronization efficiency and detection performance of this scheme are compared with those of other schemes. The experimental results show that this scheme has some detection advantages.