Abstract:The green innovation concept combining innovation-driven and green development strategies has infused new impetus into the high-quality development of the Yangtze River Delta integration. In view of the complexity of the green innovation competitiveness system, the green innovation competitiveness index system of the four subsystems of innovation input, innovation resources, ecological environment and innovation output is constructed, and the green innovation competitiveness system simulation model is constructed based on the system dynamics theory. Taking the four provinces(cities) of Shanghai, Jiangsu, Zhejiang and Anhui in Yangtze River Delta as the research area, this study studies the evolution trend of green innovation competitiveness of the four provinces(cities) by dynamic simulation, analyzes and compares the key variables, and clarifies the differences and advantages of green innovation competitiveness of the four provinces(cities).The results show that the change trend of each variable is conducive to the improvement of the competitiveness of green innovation. The overall index is in good condition and the green innovation benefit is remarkable. The comprehensive level of green innovation competitiveness of Jiangsu Province is the highest, that of Zhejiang Province is close to that of Shanghai, and that of Anhui Province is the lowest. The four provinces(cities) have advantages in different dimensions of green innovation competitiveness.