The whole process mechanized construction of transmission lines not only reduces the labor intensity of operators,construction occupation,and improves the construction efficiency,but also reduces the risk of insecurity in all stages of transmission line construction.Thus,the safety level of site construction is comprehensively improved.At all stages of construction of high-voltage transmission lines,the application of mechanized construction is introduced in detail.The traditional construction method and mecha-nized construction method are compared and analyzed from the aspects of technology and economy,construction quality and safety,and the advantages of mechanized construction method are described,which provides reference for the application of the whole process mechanized construction of high-voltage transmission lines.