Abstract: According to the fact that technological innovation develops in a certain track and direction, Dosi initially put forward the concept of technological trajectory. This paper systemically introduces the origin and development of technological trajectory, simulates operation mechanism of technological trajectory of industrial and uses logistic curves to show its rigidity and breakthrough. Thereafter, the paper uses path-dependence theory to evaluate economic efficiency of technological trajectory of industrial.

Key words: technological trajectory, technological paradigm, path dependence