The invention discloses a system for implementing financial message processing based on Netty. In the system, netty is used as a bottom frame for sending, receiving and forwarding messages, pairwise format mutual conversion between messages including ISO8583, XML, management symbol, placeholder, variable-length, TLV, COP, inside nested and combined messages is realized in project applications through customization, and message multi-format configuration conversion processing is realized. Compared with the prior art, the system for implementing financial message processing based on Netty not only improves system operating efficiency, but also can solve a problem of conversion of homogeneous or heterogeneous protocols, can support implementation of cross-system mutual transaction, can support parameterization configuration and template calling, increases reuse degree, reduces research and development cycle, increases flexibility, improves competitiveness, has high practicability and is easy to generalize.