This topic examines the application of buy hedging strategy. Interest rate futures buyer hedging is to buy interest rate futures contracts by opening positions in the futures market in order to establish a break-even mechanism in the spot and futures markets to avoid the risk of falling market interest rates. Its application mainly includes: (1) I intend to buy fixed-income bonds, fearing that the price of bonds will rise due to falling interest rates; (2) borrowers with fixed interest rate are worried that the interest rate will drop, which will lead to a relative increase in the cost of capital; (3) Lenders of funds are worried that the interest rate will drop, which will lead to the decline of loan interest rate and income.