Constructivism is a theory-based reform of traditional teaching, which advocating the important role of personalized, context, collaboration and resources provides a new request for modern teaching. This paper describes the knowledge, learning and teaching theory of constructivist, and explores the reform and practice of vocational television technology on this basis.%建构主义是革新传统教学的理论基础，其所倡导的个性化、情境、协作、资源的重要作用对现代教学提供出了新的要求。本文阐述了建构主义的知识和学习理论、教学理论，以此为基础，探讨了高职电视技术的教学改革与实践。
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