Abstract: Modern distance education is based on the Internet and terminals with teaching activities, collaborative learning is an important way to improve the efficacy of distance learning, it is required that in-depth research of consistency maintenance, collaborative awareness and other key technologies based on collaborative learning semantic, so high effident, natural interaction and customized learning will be achieved. This paper analysised model and algorithm of collaborative learning consistency about the distance education. By this model, a specific algorithms based on knowledge point structure would be Build to maintain the consistency.

Key words: CSCL, Knowledge points, Operational transformation, Consistency