Data message sharing processing method and system

The invention provides a data message sharing processing method and system, and the method comprises the steps: obtaining a processing protocol type and a message processing solution direction of a transmitted data message through a preceding-stage module; the storage management module allocates a storage address according to the length of the data message; the data message is written into the allocated storage address through the first port of the storage unit; the storage management module sends the data message to a corresponding protocol engine in the message processing module for processing according to the acquired processing protocol type and the message processing and decoding direction; the storage management module writes the processed data message back to the allocated storage address through the second port of the storage unit; and the post-stage module reads the written-back data message. According to the embodiment of the invention, the data message shares one storage unit during data security p