1, the central bank's monetary policy refers to some policies and guidelines adopted by the central bank to adjust the money supply and credit quantity in order to achieve specific economic goals.

2. The central bank adjusts the money supply by using monetary policy tools, and then adjusts the market interest rate, affecting capital investment and total market demand, thus achieving the purpose of affecting macroeconomic operation.

3. Monetary policy tools mainly include open market operation, statutory reserve ratio and rediscount policy.