Abstract: Radical technological innovation is of great significance for firms to acquire and maintain sustainable competitive advantages, and how to achieve radical technological innovation has become the focus of academic research and firm practices. Based on the behavioral science theory, this paper constructs the theoretical model of the impact of technology management capability on radical technological innovation behavior. Based on the theoretical model, this paper then establishes the system dynamics model of the impact of technology management capability on radical technological innovation behavior. Using Vensim PLE to run the simulation model, the results show that the impact of technology management capability on radical technological innovation behavior has the critical point effect. Therefore, firms should to make long-term investments in technology management capability, and continuously improve technology management capability.