With the gradual improvement of SME financing strategies, the unique advantages of industrial chain finance in risk management are increasingly prominent. As the core of modern economy, finance is the lifeline of the real economy. Through the innovation of fintech, the independent research ability of core technology has been enhanced, and the quality of financial services and risk prevention ability have been improved. This paper analyzed the financial layout of M enterprise's industrial chain, and combined the application of fintech to build a scientific and targeted credit evaluation system. It can not only solve the financing problems of small and medium-sized enterprises, but also improve the overall quality of small and medium-sized enterprises. It can also make other enterprises realize their advantages and disadvantages, so as to provide useful reference for the development of other enterprises. In this paper, the analytic hierarchy process was used to establish the evaluation model. From the comprehensive perspective of M Company's credit rating, the credit score was 85.68, which was good AA. Therefore, the research experiment in this paper can provide support for SMEs' financing and promote the development of national economy from the perspective of dominant enterprises.

Xiaochen Liu. Development of Financial Ecosystem of Industrial Chain Supported by Fintech in Big Data Environment. International Journal of Big Data Intelligent Technology (2023), Vol. 4, Issue 1: 26-41. https://doi.org/10.38007/IJBDIT.2023.040104.

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