When it comes to the meaning of CPI, it usually refers to the initials of consumerpriceindex, which indicates the changes in the level of consumer goods and services purchased by a family. When I studied macroeconomic indicators before, I mentioned that CPI is an important indicator to measure macroeconomics and plays an important role in macroeconomic analysis and national economic accounting. On the one hand, the level of CPI will directly affect the introduction of national macro-control policies, such as whether the central bank will adjust interest rates and whether the deposit reserve ratio will change again, so it will also affect the capital market (changes in stocks, futures and other markets).

The change of CPI can directly measure inflation or deflation. Inflation is caused by the general and sustained rise in the price level. When CPI is high or low, it shows the level of inflation to some extent. When the CPI is only greater than 3%, it becomes inflation, and when it is greater than 5%, it is serious inflation. The economic development is unstable at this time. At present, the GDP of European and American countries has been changing within 2%, and the same CPI is also changing between 0% and 3%. However, China's GDP growth rate is very high, but the CPI has not changed. It can be said that China's macro-control is very comfortable, and the market reaction is more rational. 20 18, 12, CPI index returned to the era of 1 and became 1.9%.

Changes in CPI index can reflect changes in market purchasing power. Once the index rises, the purchasing power of money will decrease. On the contrary, consumption has risen; Directly related to residents, it can be seen that the decrease of employees' real wages, the increase of CPI means the decrease of real wages, and the increase of CPI means the increase of real wages.

For the stock market, the CPI index usually falls when it rises; On the other hand, the stock price will fall if it falls, but this indicator is not the factor that determines the stock's rise, so this proportional relationship may not work early.