Abstract:High-quality development is the distinctive theme of China's economic development in the new era. To this end, efforts should be made to improve total factor productivity and promote technological progress in the whole society. Constructs a theoretical conceptual model to reflect the operation mechanism of China's economic development with high quality. On this basis, empirically study the relationship between heterogeneous science and technology finance, international innovation cooperation and China's high-quality economic development, and explore the role of science and technology finance and international innovation cooperation in China's high-quality economic development. The main findings of the study are that venture capital plays the most important role in heterogeneous science and technology finance. China's independent innovation plays a significant positive role in the technological progress of the whole society. International innovation cooperation is positively moderating the process of foreign technology introduction to promote China's technological progress. When the degree of international innovation cooperation is very low, the effect of technology introduction on the technological progress of the whole society is negative. Put forward suggestions: reform innovative financing methods and vigorously cultivate the venture capital market. The foothold of high-quality economic development has always been on China's self-reliance in science and technology. Adhere to the strategy of opening to the outside world and actively promote international innovation cooperation. Strengthen the innovation performance assessment of technology introduction.