Abstract:In order to reveal the paths and mechanism of differentiated development of green technology innovation among cities, this study, based on the research framework of ‘effective government and efficient market’ uses the fsQCA method to explore the configuration effect of regional green technology innovation in the 16 cities in Shandong Province. The study found that: (1) R & D personnel input is the key bottleneck affecting the high level of green technology innovation in Shandong province, and there is no necessary condition to constitute the non-high green technology innovation level. (2) There are four high green technology innovation paths and three non-high green technology innovation paths. (3) The distribution of green technology innovation level in Shandong Province shows obvious regional differences and agglomeration and radiation effect. This study deeply explains the causal complexity of green technology innovation, strongly confirms the role mechanism of combination of effective government and efficient market on urban green technology innovation, and also provides a focus for the improvement of the level of urban green technology innovation.