Because of the limited number of meteorological observation points, uneven distribution, and inconsistency with the line corridor, it is unable to provide accurate data model for transmission line meteorological environment which is used to study line fault and defense technology caused by disasters. This study analyzes the principle of Kriging interpolation algorithm, realizes the grid modeling of meteorological environment for transmission lines by using Kriging interpolation method. In addition, this study formulates the evaluation criteria of the interpolation results, and selects the temperature data on one day in 2017 of 996 meteorological observation points in Jiangsu Province. Through the experiment simulation and the analysis of the Kriging interpolation results, the selection process of the kriging semi variant function model which is suitable for the grid interpolation of the temperature data in this area is verified.