With the rapid expansion and accordingly wide investments,Sovereign Wealth Funds have aroused great concern in the international community.In recent years,Sovereign Wealth Funds have experienced great developments: growing setting-ups,rapid expansion,broad investments,increasing influence of the market,professional and market-oriented operation,diversified business strategy and so on.There are both internal and external factors leading to the developments of the funds.For the internal factors,Sovereign Wealth Funds play great roles on the economic development,for the external,first,continued rising in commodity prices promoted further expansion of sovereignty of wealth fund in oil-exporting countries since the beginning of the 21st century.Second,The global industrial transfer which promoted the exports in East Asian provided enough sources for the setting up of the Funds.Third,financial globalization has provided the appropriate channels for Sovereign Wealth Funds' wide investments.With the birth and rapid development,Sovereign Wealth Funds will have a significant impact not only on international capital markets,but also the global financial system and the world economic structure.