Cloud computing, enterprise computing as an emerging field, is gradually being used in enterprise applications, to play its low-cost, rapid deployment, flexibility to adjust the scale and other advantages. E-commerce recommendation system is an online shopping environment; commodity recommended personalized recommendation system for referring users to meet the interests of the commodity. The recommended technology used in e-commerce recommendation system can be roughly divided into three categories: information retrieval, content filtering, and collaborative filtering. Cloud computing is able to provide dynamic resource pools, virtualization and high availability computing platform. The paper proposes the research of e-commerce recommendation system based on cloud computing.