Finance and technology serve as two pivotal drivers for achieving high-quality economic development. This study selects

indicator data related to financial development, technological innovation, and high-quality economic development from 30 provinces in China over the period of 2005 to 2019. Three indices were constructed using the entropy weight method, followed by the application of coupling coordination degree models and PVAR models to examine the coupling coordination and interactive relationships among these three factors. Results indicate that eastern coastal provinces exhibit superior coupling levels across all three systems of finance,technology, and high-quality economic development compared to central and western regions. Significant inter-provincial disparities within regions reveal development imbalances and incoordination. Bidirectional causal relationships exist between each pair of the three systems: finance, technology, and high-quality economic development. Impulse response analysis reveals that financial development and technological innovation significantly promote high-quality economic development.