Abstract: The rang for selecting type of machine according to operation is put forward;Based on the given examples of value analysis of the three types of on construct machines,(ZL₍₄₀₎) wheel loader,(W₍₁₀₀₁₎) excavator and (R.F150),Seleted in earth loading operation in road building,the methods, processes and points for attention in the application of value engineering to type selection of machines are presented.