The purpose of this study is to present the impact, prospects, implications, and countermeasures on food security among various crises caused by the COVID-19 pandemic. The Food and Agriculture Organization of the United Nations defines the concept of food security as when everyone has physical, social and economic access to food that is sufficient, safe and nutritious for a healthy and active life at all times. COVID-19 poses a threat to this food security, and the risk is high because Korea has a low food self-sufficiency rate and relies on imports for most of its major grains. In order to improve food security, the current 46.7% food self-sufficiency rate should be improved. In addition, policy development such as legislation of food self-sufficiency, diversification of import sources, and establishment of an early food warning system is also necessary. In addition, the grain stockpiling system should be expanded, and diversified efforts for overseas farmland development and operation should also be carried out. It can be said that this is the time when multi-functional efforts for food security at the national level are urgently needed.