Data synchronizing system and method

The invention discloses a data synchronizing system used for synchronizing data in a source database to a target database. The system comprises a message queue generator server, a first message queue server, a second message queue server and a message queue consumer server. The message queue generator server is used for acquiring difference data in a source database according to a preset acquisition strategy, encoding and compressing acquired difference data, and writing the difference data into the first message queue of the first message queue server. The first message queue server is used for sending messages in the first message queue to the second message queue in the second message queue of the second message queue server. The message queue consumer server is used for uncompressing and decoding the encoded and compressed difference data in the second message queue, and updating data in a target database according to uncompressed and decoded difference data. The invention further discloses a corresponding data synchronizing system method.