In recent years, with the network education has become the current trend of education, a number of online school platforms have sprung up. However, these platforms are mixed in educational resources and learning effect, they can ’t give targeted suggestions about study and also lack of real-time. As the rise of webcast, "private custom" learning gradually becomes a new demand of online education in the new era. The private custom learning system which is based on the cloud service takes the individual needs of learners into account, reflecting the professional learning characteristics, and even achieves one to one network video teaching effect. The system makes full use of the advantages of cloud service and big data, and opens up the functions including teacher appointment, teacher video, teacher forum, notice message, data download and so on.