Research Conclusions: It was urgent for China to develop energy conservation and green buildings for sustainable development. On one hand, for energy conservation to building, the relevant measures should be taken to control level of energy consumption by newly built buildings; on the other hand, the innovation for energy conservation should be conducted to existing buildings. Working out standard of energy conservation to building was only means; the final purpose was to apply basic technology of energy conservation stipulated in the standard through strengthening control and strictly implementing the standard. It required whole society of hard working to energy conservation to building.