Nowadays, IPv4 addresses have been exhausted. IPv6 as the next generation of the Internet Protocol is gradually moving towards practical , Network monitoring is very important to the practical use of IPv6 , The security problems of IPv6 study is not mature, especially the security of IPv6 network security products are less . This study uses the existing IPv4 network security research results, aiming at the characteristic of IPv6 protocol , Analysis of the structure and classification of the IPv6 address , IPv6 addressing, neighbor discovery process, the domain name system , DHCPv6 , ICMPv6, IPv6 routing and security series of IPv6 basics of features , Using WinPcap programming, enabling the network packet capture, content analysis and experimental verification of the system.