Educational applications have become more and more popular, making a profound influence on education and teaching. In the "Internet+" era, it is a problem on how to design and choose a high quality and effective educational APP. Based on the Education Technology Developers Guide, 2016 annual online education user white paper and related scholars on the educational APP research, in this paper, we choose students as the research object, and preparing a questionnaire, according to statistical analysis and the structural equation model analysis. We construct a five-factor model of educational APP ...