Price of global agricultural products rises with great fluctuation. China’s food price also increases constantly. This leads to high concern of both at home and abroad for food and grain security. On the basis of making an overall analysis on current situation of grain security and making judgment on future grain security in China, this paper analyzed objectives, strategies and policies of national grain security in the new period. Finally, it came up with strategies and policy recommendations for improving agricultural production and guaranteeing national grain security.