Government intervention in the foreign exchange market can be divided into many forms. According to intervention means, it can be divided into direct intervention and indirect intervention; According to whether it causes the change of money supply, it can be divided into sterilization intervention and non-sterilization intervention; According to the intervention strategy, it can be divided into daily fluctuation intervention, subject intervention and unofficial pegged intervention. According to the countries involved in intervention, it can be divided into unilateral intervention and joint intervention. Follow-up: Then please explain the significance of those intervention methods. A: According to the means of government intervention in the foreign exchange market, it can be divided into direct intervention and indirect intervention. Direct intervention refers to the government's own intervention, directly entering the market to buy and sell foreign exchange, changing the original relationship between foreign exchange supply and demand, thus causing exchange rate changes.

Neutralization intervention, also known as sterilization intervention, is one of the important policies of the government to manage the exchange rate, also known as sterilization policy. It means that the central bank trades foreign and domestic assets in the same amount but in opposite directions to offset the impact of foreign exchange intervention on the domestic money supply. There are four effects on foreign exchange intervention: when the central bank buys foreign assets but does not write them off, the foreign assets and domestic money supply of the central bank increase at the same time, while the domestic assets of the central bank remain unchanged; When the central bank buys foreign assets and write them off, the foreign assets of the central bank increase, the domestic assets decrease and the domestic money supply remains unchanged. When the central bank sells foreign exchange, but does not write it off, the foreign assets and domestic money supply of the central bank decrease at the same time, while the domestic assets of the central bank remain unchanged; When the central bank sells foreign exchange and sterilises it, the foreign assets of the central bank increase and the domestic money supply remains unchanged.

Sterilization intervention means that when the central bank intervenes in the foreign exchange market, it does not adopt other financial policies to cooperate with it, that is, it does not change the changes in the money supply caused by foreign exchange intervention.

Non-sterilisation intervention means that the central bank allows it to buy and sell foreign exchange and change the money supply in the domestic market. Whether the capital flows completely or not, the change of money supply has the same impact on the economy.