Science is mainly manifested in the form of knowledge, while technology is materialized. Science provides the possibility of materialization and technology provides the reality of materialization. Scientific breakthrough is called discovery, and technological innovation is called invention. Science is the knowledge of creating knowledge, and technology is the knowledge of comprehensively utilizing knowledge for demand. The evaluation of science mainly depends on its creativity and authenticity, while the evaluation of technology first depends on whether it is feasible and whether it can bring economic benefits. The difference between science and technology: the functions and functions of science and technology are different, mainly in different purposes and tasks, different research contents, different forms and evaluation criteria of research results, different development processes and different productivity attributes.