This topic examines the knowledge of macroeconomic policies. Deposit reserve refers to the deposit deposited in the central bank prepared by financial institutions to ensure the needs of customers to withdraw deposits and settle funds. The ratio of the deposit reserve required by the central bank to its total deposit is the deposit reserve ratio. Raising the deposit reserve ratio, that is, the ratio of the deposit reserve required by the central bank to the total amount of deposits, is to prevent China's economy from overheating and effectively slow down inflation.