Abstract: Under the context of regional integration, this paper takes 2009-2018 new material industry panel data of Jiangsu, Zhejiang and Shanghai provinces and cities as research samples, and analyzes the industry of urban agglomerations in this region based on DEA model and spatial autocorrelation model Ecological efficiency and its temporal and spatial transition characteristics. The results show that the total GDP and growth rate of Jiangsu Province are the fastest, and the concentration of new material industry is higher. The ecological efficiency of new material industry in Jiangsu Province shows a rapid upward trend, with Suzhou and Wuxi in the South as the center, and decreases towards the surrounding area. The ecological efficiency of Zhejiang province rises slowly, generally showing a downward trend from north to south, while Shanghai shows a downward trend pure technical efficiency and industrial scale efficiency prove the accuracy of the ecological efficiency evaluation results. The gray correlation between administrative support and financial support and ecological efficiency of new material industry shows a downward trend, while the rest shows an upward trend. Relevant departments should promote the construction of regional integration in combination with the characteristics of ecological efficiency development and time-space transition of urban agglomerations, narrow the differences of ecological efficiency between cities, and realize the coordinated development of the region.

Key words: regional integration, industrial ecological efficiency, time and space transition, Jiangsu, Zhejiang and Shanghai, DEA model, spatial autocorrelation model