The emergence of cloud computing has brought great convenience for people's work and life. It achieves the sharing of resources with Internet, but there are also many problems. The information is often related to sensitive data or user's personal privacy. Once the data leaks, it will cause some adverse effects on the enterprises or individuals. So the protection of information security is particularly important. In this paper, the current problems of data privacy protection in the cloud are analyzed, and some pertinent suggestions and the corresponding data security measures are put forward.