Abstract:The financial ecosystem plays an important role in optimizing the allocation efficiency of regional resources, congesting and energizing the real economy, and promoting the sustainable development of the economy and society. The growth of start-up companies cannot be separated from the continuous supply of financial "blood" and can not be separated from diversification. Financial services system support. This article targets 283 prefecture-level cities across the country,constructing a regional financial ecosystem evaluation index system based on the system concept of “state, potential and flow”, and constructing a new enterprise performance evaluation index system based on the theory of resource theory and strategic adaptation theory, studying the Impact of Financial Ecosystems on the Performance of Start-ups in 2012-2015. The study found that regional financial ecosystems, firm size, years of establishment, and government subsidy variables are significantly positively correlated with the performance of new ventures. However, the correlation coefficient of the performance of new ventures is greater than the scale of the enterprise is greater than the establishment period of the enterprise is greater than the government subsidy. Finally, put forward specific countermeasures and suggestions.