From modest beginnings, the green building design movement has grown dramatically and will be an inevitable trend, shaped by many standard systems worldwide. In particular, high–performance building design is a part of this movement. However, in Vietnam, architects have not paid attention to this movement and have not applied it more often. The main reasons are the lack of training, the technicality of the standard systems, and the constraints in architectural creation. Therefore, a new approach to high–performance building design for architects toward the green building design movement must be pointed out. This paper proposes the parametric approach by introducing the parametric method, some applications in architecture, and the process of using this method in a green architectural building design. This can be achieved by building input data, computer simulation, and output data processing.