作为计算机技术和互联网结合的重要产物内容，云计算已经开启了IT 界与信息领域的新一轮技术革命。然 而，云计算存在着许多风险问题，在目前的网络监管环境下依然还存在有许多漏洞性问题，对于网络用户的信息安全产生了巨 大的威胁，要想解决这一问题，开展云计算背景下的用户身份认证安全分析已经迫在眉睫，对此本文将就云计算的安全问题展 开具体的分析，并提出了一些具体的应对措施。

As an important product of the combination of computer technology and the Internet, cloud computing has opened a new round of technological revolution in the field of IT and information. However, cloud computing has a lot of risk problems. There are still many vulnerability problems under the current regulatory network environment, producing a huge threat for the information security of the network users. In order to solve this problem, it is imminent to carry out the user authentication security analysis in the background of cloud computing. This paper will focus on the cloud computing security problems and puts forward some specific measures.