The monthly averaged climate data from 24 meteorological stations in Jiangsu province during 1981-2012,were used to analyze the structural relation and correlational function of meteorological elements including temperature,humidity and precipitation for each pair of meteorological stations.The relationships between structural function and station distance,correlational function and station distance are analyzed by using curvilinear regression and linear regression,respectively,which are then used to calculate and evaluate the meteorological station density in Jiangsu province.The results show that the structural function and correlational function of meteorological elements cannot meet the requirement of optimum interpolation and uniformity,and the meteorological station network should be optimized in accordance with the specific climate in Jiangsu province.