To provide a simple document replication system capable of confirming only a summary of a registered document.

The simple document replication system has a replication origin document management device having a replication means which automatically propagates the update contents to replication of a database provided on a network, a document registration part which registers document data by an instruction of a user, a summary sentence creation part which creates the summary sentence of the document data and a summary sentence replication part which transmits the summary sentence created by the summary sentence creation part to a replication destination and a replication destination document management device which records the summary sentence transmitted by the summary sentence replication part. The replication origin document management device with the replication destination document management device via the network.