Abstract: State Grid Corporation of China has creatively proposed the "six refinements and four modernizations" action plan for infrastructure construction, putting forward new requirements for mechanized construction. Mechanized construction should achieve "full use of application", and improve the efficiency of mechanized construction of power transmission and transformation projects with "mechanized personnel reduction and intelligent replacement". This article introduces the mechanized construction design and mechanized construction rate evaluation, and takes 750 kV transmission line project as an example, Describe the project mechanization application and evaluation scores.