Database and block chain synchronization data processing method and system

The embodiment of the invention provides a database and block chain synchronization data processing method and system. The method comprises the following steps: a transaction management node configures a target transaction group for a client according to a transaction group configuration request initiated by the client and feeds back an identifier of the target transaction group; and the database agent node creates a database thread and suspends the database thread according to a database execution request initiated by a client for target data operation, and sends the database thread to the transaction management node so as to add the database thread to the target transaction group. And the block chain agent node creates and suspends a block chain thread according to a block chain execution request initiated by a client for target data operation, and sends the block chain thread to the transaction management node so as to add the block chain thread to the target transaction group. Afterwards, the transaction