Abstract: This paper focuses on the industrial structure optimization and the development of low-carbon economy of Beijing-Tianjin-Hebei in view of the concept of "greenness" and "innovation" in the five development ideas put forward by the government. First of all, the development status quo of industrial structure is showed through a series of data indicators. Then from the empirical study, we can conclude that the four factors, which are scientific and technological innovation, low carbon energy, capital stock and the level of opening up, all significantly affect industrial structure optimization. Through the coupling analysis of low-carbon economic development and industrial structure optimization, the result shows that there are positive coupling effects in Beijing, Tianjin and Hebei, among which Hebei has the greatest impact. Above all, suggestions on policy are put forward.