Message processing method and system

The invention provides a message processing method and system, which can be used in the financial field or other technical fields, and the method comprises the following steps: receiving to-be-processed transaction message information, the to-be-processed transaction message information comprising service private message data, a to-be-processed product service identifier and a to-be-processed route preposition identifier; determining public area message data corresponding to the to-be-processed transaction message information according to an upstream and downstream message structure configuration table, a message interaction configuration table, the to-be-processed product service identifier and a to-be-processed route preposition identifier in a local memory; according to the service private message data and the public area message data, assembling to obtain target transaction message information; and outputting the target transaction message information to a routing preposition layer micro-service group cor