This book makes a systematic study of the history, current situation and trend of China's food security and the global food security. COVID-19 has triggered a world food crisis. Understanding the history, current situation and trend of China's and global food security is conducive to the rational arrangement of agricultural production, food storage, scheduling and import by management departments; it is conducive to the understanding of the situation of food supply and demand; it is conducive to the rational arrangement of production and operation planning. This book systematically studies the history and experience of China's food security, analyzes the 9 major problems facing the current food security, calculates the potential food production, puts forward the strategies and countermeasures for food security in the next 20 years and puts forward 4 strategies and 8 countermeasures for ensuring food security. This book will be of great value to scholars of international relations and sinologists, and has special relevance to United Nations sustainable development goal 2, eliminating hunger.