Effective coordinated development of urban rail transit network operation and urban economy is an important foundation for benign development of urban rail transit. Drawing on the Capacity Coupling Coefficient model in physics， this paper uses the coupling coordination degree model to empirically analyze the data of rail transit operation and economic development from 2016 to 2021 in Fuzhou by measuring the rail transit operation level index， Fuzhou economic development level index， coupling and coupling coordination degrees of the two systems. The results show that the operation and economic development of Fuzhou Urban Rail Transit keep a good upward trend， and the operation level of rail transit is higher than that of economic development. Fuzhou Urban Rail Transit operation and economic development has a high degree of coupling. Although the coupling coordination degree of the two systems is low， it follows an upward trend. From 2019， the rail transit network operation and economic development in Fuzhou have entered a stage of elementary coordination.