The financial services industry is going digital and intelligent；fresh new intelligent financial applications are increasingly abundant；and the financial information system is transforming to a distributed architecture. All of these have posed higher requirements for secure and ubiquitous financial network infrastructure. Meanwhile，technologies such as 5G，IPv6 Enhanced，IoT，and cloud computing are being put into large-scale commercial use in the financial services industry. In this document，we explain to you the problems and challenges faced by financial networks in IPv6 large-scale deployment and evolution，ubiquitous access and control of numerous endpoints，and financial network security hardening. Then，the latest development and application innovations in key network fields such as WAN，data center network，campus network，and network security are comprehensively discussed. Furthermore，typical financial network practice cases of financial institutions are expounded. Finally，we forecast the development direction and trend of financial networks.