Comprehensive review and analysis of the standardization process on Next Generation Network (NGN) from the point of view of telecommunication community were made. It covered the concept and connotation of NGN, NGN standardization process, and future development. An emphasis had been given to techniques such as softswitching, IP Multimedia Subsystem (IMS), and MPLSbased IP carrier backbone networks. Finally, the author pointed out: Internet technologies had provided challenges as well as opportunities for common carriers in the long run; matured techniques, especially those with high performance/price ratio would dominate the future.