The problems of management and ma cro economic decision ete．are very complicated，and the importance of these topics ale mole and more acknowledged recently．In the future，to solve this kind of problem by new approaches faces US．W e know，at the end of eighties，in order for processing“open eomplex giant systems”．the“metasynthesls from qualitative to quantitative”approach was proposed in China，which can be considered as methodology for management and decision making ．In the mean time，the Santa Fe Institute (SFI)，as a representative of several academic groups in U．S，they appreciated the new thinking，provided more heuristic ideas as well as results，and realized“complexity”as a new discipline．A brief introd uction and diseussion of above situation are summarized in this article