with the rapid development of the construction industry,the lack of energy in the earth,building energy conservation has become the basic requirements of building industry development,also is the focus of our energy.Based on the building energy saving,energy saving and energy saving method of building energy efficiency on construction,analyzes the influence of cost,elaborated construction energy-saving and economic significance;present engineering cost management to adapt to new developments in the industry,with the building energy-saving work method,and the building is energy-saving investment is larger,therefore,the need for energy saving investment and engineering construction cost,use cost for the whole process management and control.