随着信息技术在科技、生活及教育领域的广泛使用,基于网络环境下的教育已悄然而至.传统封闭的、以教师、考试为中心的教育体系已不能适应新的教育的要求;建立开放的、以学习者为中心的教育体系成为教育发展的迫切要求.本文分析了多媒体环境下教学策略,教学内容,教学手段和学习方式等多方面的变化,并在此基础上对多媒体环境下教师角色的定位进行了思考. With the widespread use of information technology in the fields of technology, life and education, education based on the Internet has quietly come into being. The traditional closed system of teachers and examinations can no longer meet the requirements of new education. The establishment of an open , The learner-centered education system has become an urgent requirement for education development.This paper analyzes many changes in the teaching strategies, teaching contents, teaching methods and learning styles in the multimedia environment, and on this basis, analyzes the teachers’ The role of the positioning of thinking.