Measurement and Analysis of the Coupling Coordination between Industrial Digitalization and Green Technology Innovation

（Financial Innovation and Risk Management Research Center，Hebei Finance University，Baoding 071000，Hebei，China）

Abstract：Based on the panel data of 30 provinces in China from 2012 to 2021，the evaluation index system is constructed to measure the development level of industrial digitalization and green technology innovation ，the coupling coordination degree model is used to measure the coupling and coordinated development level of the two，and the exploratory spatial analysis method is used to explore the spatial effect of the coupling and coordinated development of the two. It is found that ，from the perspective of the development level of industrial digitalization and green technology innovation，the development level of both of them increase year by year during the study period，but the development level of industrial digitalization is significantly stronger. From the perspective of the coordinated development level of the coupling of industrial digitalization and green technology innovation， the overall trend increases year by year，which is reflected in the development trend of provinces at the provincial level from the low coupling stage to the high coupling stage，and the regional level shows the distribution trend of East China>North China> South China>Central China>Northeast>Southwest>Northwest. From the perspective of the coordinated development level of the coupling between the sub- dimension of industrial digitalization and green technology innovation ，and the coupling and coordinated development level of industrial digitalization and the sub-dimension of green technology innovation ，at the provincial level，the development trend of the two is consistent，showing the trend of the development of each province from the low coupling stage to the high coupling stage；and at the regional level，both of them present large regional differences，but the regional differences of the former are gradually shrinking，while the regional differences of the latter are relatively small at each stage. From the perspective of the spatial effect of the coupling and coordinated development of industrial digitalization and green technology innovation，on the whole，the spatial spillover effect is obvious，and the degree of spatial agglomeration continues to increase. However，from the perspective of different regions，the spatial spillover effect is obviously different：in North China， Southwest and Northwest China，cities are scattered，and the spatial spillover effect is not obvious；in Northeast and Central China，cities are clustered due to their close distance，but the spatial spillover effect is not obvious；and in the east and south China，cities are clustered and distributed，and the spatial spillover effect is obvious.

Key words：industry digitization；green technology innovation；coupling and coordinated development；comprehensive evaluation index；spatial effect