Abstract:In order to explore the influence of spatial variation of temperature on transmission lines in Guizhou Province in the past 60 years, the error of two interpolation methods, common Kriging method and collaborative Kriging method, is compared and analyzed. The collaborative Kriging method is selected to interpolate the temperature data of 19 ground observation stations in Guizhou Province from 1951 to 2010. Temperature Distribution Characteristics in Guizhou Province. The results show that the average temperature in Guizhou Province has risen from 15.2 in 1951 to 15.9 in 2010, rising by 0.7 with an average increase of 0.12 every 10 years. Through the analysis of the spatial distribution characteristics of temperature, it is concluded that the higher temperature in Tongren, Rongjiang, Luodian and Wangmo generations may cause the softening of transmission lines and form arcs. Vertical, make transmission line insulation aging, design and construction should take into account the heat resistance of transmission line insulation materials as far as possible; In Xishui, Bijie and Weining generation, low temperature in winter may cause transmission line icing, which may cause line damage and tower collapse due to excessive force. Tower bearing capacity and wire tension capacity should be considered in design and construction.