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Foreign exchange management of a country's macroeconomic and financial management is essential, it is an important means of maintaining the country's economic and financial stability, the maintenance of international balance of payments. The foreign exchange reserve growth has been the focus of attention at home and abroad. In recent years, China's foreign exchange reserves grew faster, the amount, according to the State Administration of Foreign Exchange, the latest data show that, as of the end of 2010 has reached $ 2,847,338,000,000, ranking first in the world. Although huge foreign exchange reserves can not only pay the needs of the international trade, but also means that the sufficient ability to resist risks; However, foreign exchange reserves are not better, excessive foreign exchange reserves, the performance of both our external imbalances, and that will give China's internal economy fluctuations, such as caused by the increase in the domestic money supply and exacerbate inflationary pressures, affecting the stability of the domestic monetary policy, increasing the cost and risk of foreign exchange management. International, from an economic point of view, the high foreign exchange reserves to strengthen expectations of RMB appreciation; exchange rate fluctuations affect exports; entice more speculative funds, increasing the risk of a financial crisis. Political, the growth in China's foreign exchange reserves, the presence of double surplus, making international trade protectionism, China's anti-dumping increased; certain countries jointly to put pressure on RMB appreciation in a passive position in international affairs. Visible, excessive foreign exchange reserves will produce a variety of costs, such as the economic costs and political costs, policy costs, how to increase foreign exchange reserves have longer stays in the problem of shortage of foreign exchange, foreign exchange reserves, but turned to how to the country define appropriate or optimal size of the foreign exchange, reduce costs and improve the yield of the foreign exchange assets up. The first chapter introduces the research background and significance of research at home and abroad on issues related to the foreign exchange reserves were reviewed. The second chapter of the Exchange-scale theories and models do a more detailed introduction and commentary, and describes the different backgrounds of the various theories, the theoretical basis of the model, the expression, in particular, made a detailed review of the pros and cons of the model. The third chapter introduces the various stages of the development of China's foreign exchange reserves, reserve scale, analyzed the reasons for the growth of China's foreign exchange reserves, as well as the favorable and unfavorable effects brought about by the huge reserves. Use to improve the empirical model to estimate the appropriate scale of China's foreign exchange reserves and compared with the actual value, on this basis, combined with international best practice, and policy recommendations on how to manage China's huge foreign exchange reserves given.
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