In the present study,the impact of COVID-19 on grain security and the characteristics of the crisis it triggered were examined.Based on the contingency theory,the contingency thinking in grain emergency management was analyzed,and grain emergency decision-making model and emergency management framework were constructed.On this basis,the monitoring and early warning mechanism,emergency management system,emergency support mechanism and normalized epidemic prevention and control mechanism in Wuhan were explored.Finally,it was suggested to ensure grain security by improving the ability of grain em...