党的十八大以来，新粮食安全战略为保障国家粮食安全提供了重要依据。面对国内外新格局、新形势，一些新理念、新思想、新政策不断引入和补充，持续丰富和扩宽了中国特色粮食安全道路的内涵和边界。在此背景下，回顾了党的十八大以来新粮食安全战略指导下中国粮食安全所取得的重要成就和重大意义，梳理了当前粮食安全战略的演变路径和重点转变特征，即从“顾全面”到“保重点”、从“促产出”到“强产能”、从“压产区”到“一盘棋”、从“重数量”到“提质量”、从“生产端”到“全链条”的5大转变。提出了在政策选择方面，应从深入落实“藏粮于地、藏粮于技”战略，完善农民种粮、地方抓粮“两个积极性”体制机制，建立“双碳”目标下粮食安全与绿色发展的协同机制，打造立足国内生产与统筹国际资源的“双循环”体系，构建以“大食物观”为引领的全方位食物保障系统5方面着手，推动中国粮食安全水平进一步提高。

Since the 18th National Congress of the Chinese Communist Party, the introduction of a new food security strategy has provided an important basis for ensuring national food security. And new ideas, thoughts and policies have been introduced and supplemented, continuing to enrich and broaden the connotations and boundaries of the road to food security with Chinese characteristics. This paper reviews the important achievements and significance of China's food security under the guidance of the food security strategy in the new era and sorts out the evolutionary path and the shift which characterizes the current food security strategy. China's food security strategy has undergone five major changes:from taking care of the overall food varieties to preserving the key varieties, from promoting output to strengthening production capacity, from pressing the production areas to making a concerted effort, from emphasizing quantity to improving quality, and from the production side to the whole chain. In terms of policy options, to promote further improvements in food security, we should start with the in-depth implementation of the strategy of storing grain in the land and storing grain in technology, improving the institutional mechanism of two positive aspects of farmers' grain cultivation and local food control, establishing a synergistic mechanism of food security and green development under the goal of double carbon, building a double cycle system based on domestic production and integration of international resources and establishing a comprehensive food security system led by the Big Food Vision.