Nowadays, with the development of Internet technology, with the rapid development of information and the geometric growth of information processing technology, cloud computing came into being. As a new Internet model, cloud computing will become the basic model in the future. After the concept of "cloud" was put forward, Internet giants such as Amazon, Microsoft, Intel and IBM followed suit. Then the fashion of "cloud" quickly swept the world. This paper briefly introduces the concept, background and development process of cloud computing. The development and application of cloud computing in information management has brought great convenience to people's work and life.