The resource-saving transmission line and the energy-saving wires has been widely used in practical engineering due to the excellent characteristics of energy-saving, materials-saving, land-saving, long service life and good performance-price ratio, with development of its work principle and structure. The wires’ choice in actual project was restricted by the environmental conditions of line wire, such as design load conditions, altitude, line length and so on. This paper studied the selection of construction type in a 220 kV transmission line project, compared the technical economy of the optional wires from three aspects: electrical characteristics, mechanical characteristics and economic analysis and recommended the optimum conduct type in technology and economic. The results show that the resource-saving transmission line and the energy-saving wires have good economic and social benefits in the construction of new line.