Abstract: In order to plan corn reasonable planting and land resources sustainable use for the future under different climatic years in Chongqing, the study based on demands of maize habitat and using cultivated land as an evaluation object at 100 m×100 m grid resolution, a suitability evaluation index system of spring in Chongqing was established. The index system includes 5 relevant factors from 3 aspects: topography, soil and hydrothermal. The quantity, quality and spatial distribution of suitable land resources for maize were assessed by means of GIS technique, integrated with correctional weighting-multiplication model and dynamic clustering analysis. The results showed that: under the three kinds of climatic years, the land suitability of corn in Chongqing was generally good, the highly suitable areas and middle-appropriate areas accounted for 70% or more, which could represent the level of the suitability of the study area. The acreage of the highly suitable grade of corn land was the largest in the climatic normal years, the smallest in the partial drought years, and mid to the partial wet years; the acreage of the unsuitable grade was the largest in the partial drought years, the smallest in the partial wet years, and mid to the normal years. According to the suitability rank of corn land under the different climatic years, aimed at the status and existing problems of corn land in Chongqing, the suggestions of corn land sustainable utilization were put forward.