Inflation means that the country issues too much money, which leads to the decrease of the original value of money and the rise of prices. For example, a kilo of Chinese cabbage was originally made in 2.2 yuan, but the price rose to 4.4 yuan due to the excessive currency. Objectively speaking, it refers to the phenomenon that the money supply is greater than the actual demand of money, that is, the actual purchasing power is greater than the output supply, which leads to the devaluation of money and the sustained and general rise of prices for a period of time. Its essence is that the total social demand is greater than the total social supply (supply is far less than demand). Excessive issuance of paper money, coins with low gold content and credit currency will lead to inflation.