Abstract：In the construction of a unified national market, the crosscity flow and borrowing of innovative elements will become an important driving force for the improvement of urban innovation capabilities and the highquality coordinated development of regional economy. Taking the Yangtze River Delta urban agglomeration as an example, this paper constructs a measurement system of the borrowing scale of innovation elements from four perspectives: borrowing R&D personnel investment, borrowing R&D capital investment, borrowing R&D institutions, and borrowing innovation achievements, and empirically analyzes the mechanism of borrowing scale on the development of urban innovation capabilities. The study found that: There is the borrowing scale effect of innovation factors among the Yangtze River Delta urban agglomerations; The borrowing of the three elements of R&D institutions, innovation achievements, and R&D personnel investment can promote the improvement of urban innovation output, with the promotion effect of borrowing R&D institutions the strongest, followed by that of borrowing achievements; Urban population size, degree of opening to the outside world, and level of industrial diversification have positive effects on borrowing investment in R&D personnel, R&D institutions, and borrowing innovation achievements, respectively.
谷人旭，乐欢. 创新要素的借用规模对城市创新能力的影响研究#br#
——以长三角城市群为例[J]. 江苏大学学报（社会科学版）, 2023, 25(4): 74-89.
Gu Renxu, Yue Huan. On the Influence of Borrowing Size on Urban Innovation Ability：A Case Study of the Yangtze River Delta Urban Agglomeration. Journal of Jiangsu University（Social Science Editi, 2023, 25(4): 74-89.
