The grain industry, which is related to the national economy and the people’s livelihood, is an important industry. Promoting high-quality development of the grain industry though sci-tech innovation is the fundamental requirement for building a strong agricultural country of China and promoting Chinese path to modernization. Based on the new requirements of China’s new journey to modernization for the high-quality development of grain industry, this paper analyzes the theoretical mechanism and practical demands of the high-quality development of grain industry enabled by sci-tech innovation. It also analyzes the constraints of sci-tech innovation to empower high-quality development of the grain industry in China from three aspects, which are technology supply, technology support, and technology absorption. These constraints include the low efficiency of sci-tech innovation, and the need to strengthen sci-tech supply capacity; lack of collaborative innovation and insufficient technological support capabilities; the quality of the business entity is needs to be improved, and the ability to absorb technology needs to be strengthened. Focusing on four dimensions: top-level design, supply-demand linkage, integration and fusion, and guaranteed support, this paper analyzes the implementation mechanisms of sci-tech innovation empowering the high-quality development of grain industry. In other words, the top-level design mechanism is constructed as a scientific direction which will lead the highquality development of the grain industry empowered by sci-tech innovation; the supply-demand linkage mechanism will work as long-term driving force to stimulate sci-tech innovation and empower the high-quality development of the grain industry; the integration and fusion mechanism is built to enhance the practical effectiveness of sci-tech innovation in empowering the highquality development of the grain industry; the guaranteed support mechanism is to break the bottleneck of sci-tech innovation in empowering the high-quality development of the grain industry.

sci-tech innovation  /  grain industry  /  high quality development  /  Chinese path to modernization