The background of domestical pcsam software was introduced briefly. According to the many insufficiencies of French CSEE’s pcsam software, a new thought named MDA Parsing was proposed. MDA Parsing processed the structures and the definitions of sam binary file nimbly by xml MDA; using the factory method to fulfill the OCP in software construction; designing the new functions based bit to get value from binary data; adopting many kinds of computer technology for example binary file stored datum, I/O times, multi-data streams as well as multithreading to enhance the speed of paring file. The sam binary file is fast correctly parsed by MDA Parsing, and the method is given based on the VC6.0 .