Abstract: The problem of grain is very important,which relate to social safety.Based on analysis grain production of China at present,the problem is presented which land resource destruction by mining coal,and it influences safety of China grain. According to this problem,a series of measures are adopted to insure safety of China grain,bring mining coal resource into the orbit of social economy sustained and stable development.Such as increasing the grain comprehensive productivity,strengthening dynamics of land reclamation,adopting mining technology to lighten subsidence and introducing "3S" technology into mining and so on.