Abstract: Corn is the world"s most widely grown cereal crops, rice and wheat acreage behind, but the first of the three cereal production ranks, has become China"s first major crops. Many studies show that the impact of climate change on crops is very sensitive, and our corn is still largely dependent on agricultural climate resources, spatial distribution pattern of corn by the effects of climate conditions. Maximum entropy model, this paper affect the distribution of corn dominant factor was subsequently analyzed and divided climatic suitability distribution of maize growing areas, provide a scientific basis for the development of maize response to climate change.