Enhancing classroom teaching models and evaluation methods, strengthening data mining and analysis, and deepening the integration of information technology and educational innovation have become important goals of China's recent implementation of digital education strategies. This paper proposes the use of blockchain concepts to create a more comprehensive system for data collection, sharing, and analysis, facilitating efficient coordination of data between disciplines, teachers, and courses. By deeply integrating big data technology with university teaching evaluation systems, it assists in reforming teaching evaluation modes and methods in different disciplines, addressing the practical issues of "limited practicability, limited data availability, and system development challenges" in current practices. Furthermore, it aims to promote the practical implementation of educational big data and gradually achieve the goals of building a university teaching evaluation system based on big data.