With constant growth of China’s population and increasingly serious situation of farmland protection, the grain security has become a hot issue of China. This study firstly elaborated grain security measures in grain exporters, such as the United States, Australia, and EU, and grain importers such as Japan, South Korea and India. In line with these security measures, it analyzed implementation background of these policies. Finally, combining social and economic development situations and natural resource endowment of China, it revealed the implications of these measures for China and came up with policy recommendations for China’s grain security.