the formation of the competitiveness of energy saving service industry in China is of great significance for promoting sustainable economic development and forming a green productive lifestyle. Through analyzing the characteristics of the energy conservation service industry in China, and connecting with the domestic and foreign scholars study on industrial competitiveness, put forward a kind of to distinguish between causes and results of energy saving service industry competitiveness formation mechanism analysis framework; On the basis of this, we explore the factors and measures of the influence factors of energy saving service industry competitiveness, and construct the mechanism index system of China"s energy saving service industry competitiveness. Based on the PLS-SEM model, the formation mechanism of energy saving service industry competition is studied and the feasibility of the model is verified. The results show that factors of production input and industrial organization structure is the competitiveness of the industry"s direct influence factor, industrial environment, auxiliary industry, the market demand of three factors on the influence factors of production inputs, in turn, affects energy conservation service industry competitiveness.