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In recent years, the development and application of augmented reality technology has become a newly emerging and popular research field. The multi-dimensional display, virtual-actual combination, real-time interaction and other characteristic of the technology meet the demands of science popularization education. It has a unique advantage in the information display and has laid a good foundation for the research and development of innovative children's science popularization education model. This paper, taking the self-developed children's plant science popularization education application as an example, analyzes and researches four technical contents: the augmented reality core technology, the real-time rendering technology, the interaction technology and the 3D model design, and explores the application value of augmented reality technology in the field of education.