IPv6作为Internet协议下一版本必将取代IPv4,但是两者共存局面还要持续时间较长。在此过渡期间,由于IPv6引入新特性也带来安全上的新风险和威胁。本文分析探讨了IPv4向IPv6过渡机制并对IPv6过渡机制的安全问题进行了深入研究,提出一种针对双栈转换机制过渡方案的安全策略 IPv6, as the next version of the Internet Protocol, will inevitably replace IPv4, but the coexistence of the two will continue for a long time. During this transition, there are new security risks and threats due to the introduction of new features in IPv6. This paper analyzes the transition mechanism from IPv4 to IPv6 and IPv6 security mechanism in-depth study conducted an in-depth study, proposed a dual stack transition mechanism for the transition strategy of security policy