American and China are both great power of maize production in the world, but there are obvious differences in the level of maize production between them. The differences were elaborated in terms of the variety application, soil fertility, the level and technique of fertilization, control of plant diseases and insect pests, the mechanization degree and comprehensive quality of peasants and so on, at same time,it put forward the suggestions to narrow the gap in view of existing situation of maize production in China.