This paper analyzes the resources and environmental constraints faced by the food security guarantee in the new normal period, and analyzes the important impact of the local grain reserve mechanism on domestic food security.It is necessary to adhere to the combination of national macro-policy and local micro-governance, give full consideration to the long-term safety and short-term balance of grain supply, and ensure grain yield, and pay attention to quality and strengthen the regulation of local grain reserve mechanism.On this basis, improve the reserve mechanism construction, the establishme...