【关 键 词 】：
In recent years, the reform in education has made remarkable achievements, but many difficulties still exist in some fields, such as personalized learning, deep learning, smart learning, and as a result, teaching reform and optimization driven by the data is advocated. Meaningful big data refers to the multi-dimensional data, collected in the process of students' natural and continuous learning and covering students' cognition, behaviors, and emotions and so on. The data, with the characteristics of multi-type, quantifiable calculation and visualization, can provide reference for scientific decision-making of teaching and learning. Based on meaningful big data, this paper puts forward its application and value in innovating teaching mode, providing accurate evaluation, improving learning quality and optimizing teaching decision for the purpose of providing theoretical and practical reference for teaching optimization and quality improvement.