Green finance, green technology, and green tax systems are the necessary process and inevitable result of accelerating the construction of ecological civilization and realizing high-quality development; energy-economy-carbon emission (EEC) is related to the quality of economic and social development, which is of great significance to the green transformation of the development mode. This paper selects 30 provincial-level regions in China from 2013 to 2022 as samples to empirically test the separate impacts as well as the comprehensive impacts of green finance, green technology, and green tax system on EEC. The results show that: green finance, green technology, and green tax systems have a positive impact on EEC; the combination of green policies under the coupling degree of coordination affects EEC; based on the fuzzy set qualitative comparative analysis (fsQCA) group state analysis to get two paths of the impact of green policies on EEC, and to discuss the causal relationship between the green policies under the paths and the results of the concern, to provide the best solution for the provinces and municipalities to implement the green policies.