IP合法侦听是一种针对被怀疑的IP网络用户或业务进行监听的手段,它通过向网络运营商/接入提供商/服务提供商发出侦听命令,并由它们提供所侦听对象的通信内容和相关信息来完成。介绍了IP合法侦听技术的引入,详细讨论了各种情况下侦听点的选择和侦听信息的捕获,具体分析了涉及安全性问题的侦听内容的传送技术。 IP lawful interception is a means of intercepting suspicious IP network users or services by sending interception commands to network operators / access providers / service providers and providing them with the interception Communication content and related information to complete. This paper introduces the introduction of IP lawful intercept technology, discusses the choice of interception point and the interception information in various situations in detail, and specifically analyzes the transmission technology of interception content related to security issues.