在当前粮食安全形势依然严峻的情况下，粮食安全对于支撑全面乡村振兴和建设农业强国尤为重要。本文以粮食产销过渡地区江苏省南通市为例，分析了其耕地利用现状、粮食种类与分布、粮食生产现状以及粮食企业、仓储与流通等领域的基本情况，总结了南通市在经济快速发展的同时保障粮食安全、实现地方粮食供给紧平衡的主要做法和存在问题，并提出强组织、谋特色，稳定产量，以科技提品质、增效益，提升产业、促进流通畅达等政策建议。

With the current situation of food security still grim, food security is particularly important in pushing forward the overall rural revitalization and making China strong in modern agriculture. This paper took Nantong City, Jiangsu Province, a transition from grain production area to grain selling area, as an example, and analyzed the current situation of its cultivated land utilization, the grain type and distribution, grain production status, as well as the basic situation of grain enterprises, warehousing and circulation. It summarized the main practices and existing problems of ensuring food security in Nantong while the city develops fast in economy. Finally, the paper put forward policy recommendations to strengthen food security in four aspects including seeking distinctive developments, ensuring the total output of the cultivated land, increasing the production quality and efficiency, and integrating the agricultural industry chain.