Abstract:Taking technological incentive policy, “notice on the cultivation of specialized, refined, special and new ‘Lttle Giant’” in 2018, as a quasi-natural experiment, the data of listed enterprises from 2015 to 2021 was adopted to identify the impact of the policy on technological innovation and financing constraints of Little Giant, and then verified the mechanism of the policy on the high-quality development of Little Giant. The results show that the technological incentive policy significantly improves the TFP of Little Giant, with a noticeable time lag. Further analysis verifies that the policy primarily influences the TFP of Little Giant through the interaction of innovation effect and certification effect. Heterogeneity analysis show that the policy has a more significant promoting effect on private enterprises, which extends the microcosmic mechanism of Chinese technological incentive policy to offset financing constraints, deepens the understanding of the effect of incentive policies, and provides theoretical guidance and implementation plans for promoting the high-quality development of Chinese SMEs.