Abstract:Based on yield data of maize and daily meteorological data from 1981 to 2015 of 50 automatic meteorological stations, temperature, precipitation, sunshine duration and climate suitability models were established in every ten days in each region with the method of fuzzy mathematical method. Then suitability of single factor and climate suitability in the whole stages, vegetative stage, stage of vegetative and reproductive, reproductive stage was calculated using the method of weighted analysis, and their temporal-spatial variation characteristics were analyzed. The result showed that in the whole stages and vegetative stage, suitability of sunshine duration was the highest, next was the temperature, and suitability of precipitation was the lowest. Suitability of temperature in most cases was the highest in the stage of vegetative and reproductive, while suitability of precipitation was still the lowest. In the reproductive stage, suitability of sunshine duration was the highest, but suitability of temperature and precipitation were unstable in different regions and different years. Therefore, water content was the key meteorological factor that affected the development of maize in Jilin Province. Suitability of precipitation in west was lower, while in east was higher, which result in the climate suitability has the same characteristics. Climate suitability in reproductive stage in all regions, and stage of vegetative and reproductive in east were rising but not significant, the others were declining.