【key words】Money supply Exogeny Endogeny Money multiplier Reserve rate;

【abstract】Fully understanding the endogeny and exogeny of current money supply is beneficial to the central bank's adjusting the monetary policy effectively and helpful for it to make appropriate monetary policies and financial reforms.Building theoretical model in line with nowadays Chinese banking,the article tries to specify the various factors that affect the money supply.Next,it is discussed to what extent they are mastered by the central bank,and the author concludes that our country's monetary supply is much e...