Making monetary policy has a key assumption which requires a stabile relationship between monetary aggregate and its determinants such as gross income, interest rate or inflation.

• 货币政策能够发挥效用有一个关键前提：货币总量与货币政策目标如通货膨胀、名义收入增长等存在稳定的关系，即需要一个稳定的货币需求函数。