"The Core Consumer Price Index (Core Consumer Price Index, Core CPI) is one of the most widely used measures of inflation in the United States, published monthly by the U.S. Bureau of Labor Statistics. It refers to the Consumer Price Index (Consumer Price Index, CPI ) in the core part after removing highly volatile factors such as food and energy. Because the volatility of food and energy prices is large, it is not conducive to reflecting the real situation of inflation, so excluding their influence can measure the trend of inflation more accurately .

The core CPI measures changes in prices for typical household consumption expenditures, including housing, transportation, health care, education, entertainment and other services. Because the CPI reflects the spending behavior of typical households, it is considered one of the best indicators of the impact of inflation on the general public.

The core consumer price index plays an important role in the formulation of US economic policy. The Federal Reserve uses the core consumer price index to assess the level of inflation and formulate monetary policy to control inflation. If the core consumer price index rises, indicating rising inflation, monetary tightening measures, such as raising interest rates, may be taken to curb inflation. Conversely, if the core CPI falls, that would indicate slower economic growth, and the Fed could take monetary easing measures, such as lowering interest rates, to stimulate growth.

In addition, the core consumer price index is also an important indicator in the decision-making of enterprises and governments. Governments and businesses need to pay close attention to changes in the core CPI to make sound policy and business decisions. Higher inflation can lead to higher production costs, and companies face the risk of lower profits and higher prices. The government may consider strengthening macro-control to curb inflation and maintain stable economic growth.

In short, the core consumer price index is one of the important indicators to measure the inflation situation in the United States, and it has an important impact on the monetary policy formulation of the Federal Reserve Board, corporate decision-making and government macro-control. "