The main functions of re-lending are as follows: First, the central bank adjusts the re-lending interest rate to affect the cost and available quota of credit funds obtained by commercial banks from the central bank, causing changes in money supply and market interest rates. change. For example, when the central bank wants to tighten money and implement tightening policies, it can increase the re-lending rate, reduce the amount of base money, increase the cost of commercial banks' loans to the central bank, and inhibit commercial banks' lending to the central bank; second, re-lending Adjustment of loan interest rates is an effective way for the central bank to publicize monetary policy changes to commercial banks and society. It can have a warning effect and thus affect people's expectations to a certain extent. When the central bank raises the re-lending interest rate, it means that the central bank has issued a warning about the progress of inflation, making manufacturers cautious about further investment expansion; when the central bank lowers the re-lending interest rate, it means that in the eyes of the central bank, inflation has eased. , This will stimulate investment and economic growth, and play a role in adjusting the industrial structure and product structure to a certain extent.