With the development of society, educational technology came into being. With people's understanding, the understanding of educational technology is getting deeper and deeper. Educational technology is the synthesis of all material tools, methods, skills and knowledge and experience used by human beings in the process of education and teaching activities. It can be divided into materialization and ideology. Tangible technology mainly aims at the material tools used in education and teaching activities. Intangible technology not only includes skills, strategies and methods to solve education and teaching problems, but also includes teaching ideas and theories contained in them. Educational technology is the theory and practice about the design, development, application, management and evaluation of learning process and learning resources.

Educational technology is a new comprehensive subject, which is influenced by many scientific theories. The related theories of these disciplines have different influences and functions on the formation of the theoretical basis of educational technology. Every development and change of the theoretical basis of educational technology triggered by the development and change of these related theories will promote the development and evolution of educational technology.