Currently the inefficiency in using energy has led to many bad consequences. Therefore the human living standards are increasing day by day but potentially a profound risk to the future plus an unnecessary wasting of resources and money. Previously, almost people didn’t think about anything like “Green”, “Enviroment”, “the concept of Green Building”, “Environmental sustainability architecture”… while designing or constructing. People think these are the concepts for the lack of practical and economical. However, in crisis of the energy, natural resources and the natural environment today, “The Green Building” is the inspiration closer to humans. Share a desire to help the people lives become better and limited resources at the lowest possible, we have regrouped and established SAO with an intense expectation that SAO‘ll become a leader in Simulation–Analysis–Optimization.