Abstract: Based on the theory of dynamic development of disciplines, applying life cycle theory and the theory of technological innovation nonlinear development, combined with the discipline development law, the development process of emerging disciplines is studied. Discipline life cycle is divided into five periods: incubation period, growth period, development period, mature period and transformation period. The evaluation index of discipline development based on scientific research and practical application is proposed, so as to establish the two-dimensional coordinate system for the evaluation of discipline development. It is proposed that the coordinate system can be divided into three intervals, namely, "graphene interval", "bio material interval" and "cloud computing interval", which represent three different development models of emerging discipline. On this basis, the time dimension is introduced to form the three-dimensional coordinate system. Thus, the discipline development path model is built, which can quantitatively describe the dynamic development of discipline.