Abstract:The strategy of aerospace power has given new missions to aerospace enterprises, and also put forward new requirements for the construction of the coupling and coordination capacity of technological innovation and business model innovation of aerospace enterprises. Social network analysis and value network theory are used to construct a coupling evaluation system consisting of the evaluation system of technological innovation capability and the evaluation system of business model innovation capability. 26 A-share listed aerospace enterprises in China are taken as the research objects, and the panel data of the 26 enterprises are collected during the period of 2012-2021, so as to analyse and calculate the size of technological innovation and business model innovation capability in terms of the time and spatial dimensions and the level of coupling coordination between them. and the level of coupling coordination between the two. The results show that: China's aerospace enterprises' technological innovation ability and business model innovation ability are not strong as a whole, and in the time dimension, the technological innovation ability shows a rising trend, but the business model innovation ability shows a decreasing trend; there is a strong coupling relationship between the two, but the coupling and coordination level is low as a whole, and there is an obvious lag in time, and there is a large regional difference, presenting an " east high and west low" trend. The spatial development pattern of "high in the east and low in the west".