Abstract: The presentation about the gap of building energy saving between China and other countries is illuminated,and the features of embodied energy and building energy intensity are also narrated.Moreover,the introduction is present about the features of subtropical climates,thermal-humidity load and the energy consumption of building materials and construction process.The building total energy consumption involves construction and operation energy,so it can’t be done only to consider building original investment or operation cost.On the contrary,it convicts that it is helpful to building energy saving to minimize energy intensity embodied in building lifetime.

Key words: subtropical； building energy efficiency； energy embodied； building energy intensity； energy(saving)；