Under the pressures of population increase, arable land decrease, water shortage, planting area reduction of three major grain crops (rice, wheat and maize) in recent years, there is a potential crisis in food security in China. As an all-purpose crop with high water utilization efficiency and long industrial chain, the potato planting area has been increased year by year. Compared with the three major grain crops, potato planting area can be further increased by using the winter fallow fields and its yield can be further increased as well. With the development of potato industry, potato will play more and more important roles in alleviating the problem of food security in China.