Foreign exchange reserves are essential for an open economy. It is an important guarantee to make up for the balance of payments deficit, to intervene in the foreign exchange market, to maintain the exchange rate of the local currency, to repay the external debt and to maintain public confidence. However, the foreign exchange reserves are not as good as possible. China's foreign exchange reserves continued to grow and the high scale of concern, on the high foreign exchange reserves and inflation, the appreciation of the renminbi pressure, holding costs of more research. This paper first introduces the concept of foreign exchange reserves, and analyzes the root causes of the growth of China's foreign exchange reserves. Combined with previous research results to explore China's foreign exchange reserves continued to grow on the positive and negative effects of the economy.

China divides the money supply into three levels: cash in circulation M0, cash that flows outside the banking system; the second is the narrow money supply M1, that is, M0 plus the deposit of enterprises and institutions; Money supply M2, that is, M1 plus enterprises and institutions of time deposits, household savings deposits and other deposits. In September 2008, China's monetary policy moderates easing in response to the serious impact of the international financial crisis. At the beginning of 2009, the State Council put forward an annual growth of about 17% M2, more than 5 trillion yuan of new loans, relative to the expected 8% GDP growth rate and 4% of the CPI index is still a moderately easy monetary policy. China's monetary policy this shift is correct, strong with the government's active fiscal policy, the role of economic stabilization and recovery is more obvious.

In the global economic integration today, any economic turmoil will be in a very short period of time spread throughout the world. By the sub-prime mortgage crisis triggered by the 2008 US financial crisis, this will be more vividly. China's accession to the WTO, the economy has been with the global convergence, the economic crisis is bound to China's financial market to bring a turbulent. In order to stimulate China's economic recovery, the central bank to adopt a moderately easy monetary policy, a sharp increase in money supply. This paper mainly studies the influence of the increase of money supply in China after the sub-prime mortgage crisis, and explores the relationship between money supply and economic growth and inflation through quantitative and qualitative analysis. Finally, we summarize the results through the study.

In this paper, we use the VaR model to study the daily weighted average interest rate of the interbank market in China from January 4, 2013 to October 30, 2014, and establish the interest rate risk measure of China's interbank lending market based on GARCH model (GARCH (1,1) / TARCH (1,1) / EGARCH (1,1)), the following conclusions are drawn: t distribution is not suitable for describing the distribution of interbank lending rate series in China, the generalized error distribution Which can better describe the distribution of interbank lending rates in China. According to the sample data, the risk of interbank lending rates at the present stage is also low.

In recent years, with the rapid development of China's economy and the trend of economic globalization, China's financial market development momentum is good. Commercial banks and other financial institutions, the rapid growth of credit scale, the development of the national economy has played a catalytic role. But the credit changes will affect the investment changes, which led to increased money supply, but also increase the credit risk, commercial bank credit expansion caused by a series of problems also exposed: exacerbate inflation, resulting in overcapacity, causing economic structural imbalance, accumulate the risk of the financial system, and increase the bank's bad assets. The scale of credit has become a hot topic of concern at home and abroad, research and grasp the rational growth of commercial bank credit to achieve the best size of the problem is urgent. This paper analyzes the reasons for the increasing credit scale of commercial banks, analyzes the harm of excessive expansion of credit scale, explains the necessity of rational expansion of credit scale, and puts forward some suggestions on the credit development of commercial banks in the future.