Abstract: A study onthe evolution mechanism oftechnology flow network cross countries is a new exploration in the field ofglobal innovationsystem.This paper constructs the technology flow network cross countries through international trade data, and sets up evolution equations of networksystemusing theHakenmodel, then does an empirical research using the TOP20countries in network as samples. The results show that, national technological innovation capability is the keyvariable in the evolution process oftechnology flow network cross countries, and enhancing thecapability of technological innovationisthe cornerstone fordeveloping countriesto enter into the globalnetwork.

Key words: technology flows, network evolution, Haken model, aerospace