Abstract: "Beihang Mode" has created a miracle in China's scientific and technological innovation. By analyzing the national macro environment for innovation and the micro mechanism of innovation in this mode, the research reveals that the formation of this mode lies in attaching importance to the innovation of the social environment and the needs of the construction of national innovation system; the major national strategic demand is an important driving force for the mode formation; technological innovation mechanism which is made up of innovative base, team, spirit, tradition and management system provides important support and guarantee to the formation of this mode. The model represents the major technological and engineering research advantages of Beihang University in the application field, but it also has shortcomings in basic research at the leading edge of science. To achieve sustainable development of this mode, it is necessary to carry out the reform and innovation comprehensively while maintaining its advantages.