Comparative Analysis on LEED3.0 and LEED2.2

LEED is the most authoritative green building appraisal system in the world,which is also the green building appraisal system's leader in the world.Researching changes of the LEED,will help the development of the green building appraisal system in China.Through comparative analysis on the value and content between LEED2.2 and LEED3.0,it expounds the development of the LEED,making a good reference for our green building appraisal system.