Intranet and extranet data synchronization method, device and system, extranet server and storage medium

The invention discloses an intranet and extranet data synchronization method, device and system, an extranet server and a storage medium, an intranet and an extranet are isolated through a security isolation device, and the intranet and extranet data synchronization method comprises the steps of querying an intranet data synchronization database, and obtaining a to-be-synchronized data table stored in the intranet data synchronization database, the to-be-synchronized data table is generated by monitoring storage data of an intranet service database by an intranet data monitoring component; issuing data in the to-be-synchronized data table to a message queue; and subscribing and monitoring the message queue so as to synchronize the data in the to-be-synchronized data table to an external network service database according to the message type. According to the internal and external network data synchronization method, device and system, the external network server and the storage medium, real-time synchronizati