rediscount is a special form of loans provided by the central bank to commercial banks, and it is also an important means for the central bank to control the credit scale and money supply. When the domestic inflation trend or the existing inflation intensifies, the central bank will increase the rediscount rate and increase the financing cost of commercial banks, so that commercial banks will reduce the rediscount to the central bank due to the increase of discount cost, forcing them to tighten credit, causing the reduction of money supply sites and the increase of market interest rates, so as to achieve the purpose of stabilizing prices.