Cloud computing is a model of business computing and it distribute computing tasks in a resource pool which constitutes by a large computers, so it can provide users with ondemand computing power, storage capacity and application service capabilities. The cloud computing provides cheap and efficient solutions for massive data storage and analysis. Data mining is finding potentially useful information and knowledge people do not know in advance from a large number of incomplete, noisy, fuzzy, random practical application data. And it played a guiding role in many areas of scientific research and business decisions, with far-reaching social and economic significance. The research on data mining clustering algorithm in cloud computing environments has an important theoretical significance and application value.