Abstract:This paper takes the national public creation space policy as the research object, establishes the "supply-demand" analysis and evaluation model of public creation space policy, and studies the effectiveness of the supply structure of policy tools by means of quantitative analysis of policy tools. On the basis of the national public creation space statistics data, this paper uses SPSS hierarchical regression model to analyze the value discovery, enterprise start-up, growth creation and financial performance. Four aspects of effectiveness are analyzed empirically on the effect of China"s public space policy. The results show that the supply of policy tools covers a wide range of areas, but there are more policy tools with strong government involvement, insufficient use of some effective policy tools, laissez-faire, participatory, strategy-oriented and government-led policy tools, which play different roles in value discovery, enterprise start-up, growth creation and financial performance, and some policy tools. It even produces inhibition. The article puts forward the following suggestions: We should continuously optimize the supply system of public space policy, establish a feedback mechanism for tracking policy effects, and improve the implementation guarantee system of public space policy.