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责任编辑：陈诗静

（1.Shanghai Academy of Social Sciences，Shanghai 200235，China；2.Business

Shanghai 200235，China）

Economics College，Shanghai Business School，

Abstract：After the new coronavirus outbreak，countries will pay more attention to competition in industrial clusters，and the business environment is a key factor in attracting industrial agglomeration. The Yangtze River Delta region has entered an accelerated phase of regional high-quality integration，which puts forward higher requirements for the construction of the business environment，especially the integration of institutional innovations related to the business environment. At present，though there are some common characteristics in the Yangtze River Delta region in terms of the optimizing the business environment，such as the exchange of data，the lack of institutional coordinated arrangement，and so on，there are still some differences in terms of innovative measures and the evaluation system. To carry out the quantitative analysis on the real effect of business environment construction in the Yangtze River Delta，we can choose four first-level indicators，such as government service，industrial transformation，regional function，and talent environment，and 25 second-level indicators，and adopt the entropy weighting method to determine the weight of certain indicator and work out the comprehensive score. It is found that Shanghai has the highest score，and then the Zhejiang and Jiangsu province；and Anhui province has the lowest one. To further optimize the business environment and lead the construction of business environment in China，Shanghai should take advantage of the low cost of supporting service to cover the cost of land， increase investment in real economy，alleviate the pressure of medical resource，and shorten the time of commuting；Zhejiang should increase the supply of public cultural infrastructure；Jiangsu should reduce enterprises’cost，improve the quality of environment，and give play to the role of public finance；and Anhui should seize the opportunity of integration in the Yangtze River Delta region to optimize the overall business environment. Besides，these provinces and cities should pay attention to the whole region development，give play to the role of coordination effect of all these provinces and cities，realize the sharing of date within the region，and establish the unified evaluation indicator system and evaluation pattern for business environment.

Key words：three provinces and one city；government service；industrial transformation；regional function；talent environment