Open course created new opportunities for individuals to learn and grow. Learners around the world have the opportunity to learn the world famous master lectures, have access to school teacher all kinds of courses. Learners have more learning opportunities, excellent course resources sharing. Crescent beyond the development of cloud computing technology for the further development and promotion of open course provides the technical support. This paper analyses the course characteristics of cloud computing environment, the real-time interaction between teachers and students, learning, heterogeneous terminal access to track evaluation Angle discusses the application of open course mode, build a cloud computing environment English course design mode, for a cloud environment study way, the change of teaching mode, and even the reform of the management mechanism research has reference.