In the context that global grain security is still in very severe situation, the grain security situation in China is not optimistic as well. The “Red Line of Farmland Area” cannot completely solve the grain security problems in China. We still need to seek new breakthroughs in the quality and yield of farmland. The construction of high standard capital farmland is the important premise to guarantee national grain security. On this basis, this paper has summarized the difficulties we are facing in the construction of high standard capital farmland, and has proposed the methods and measures to construct high standard capital farmland and lay a solid foundation for grain security in China.