A futures trading method in which traders buy futures in the futures market first to avoid causing economic losses to themselves when buying in the spot market in the future. Long hedging, also known as buy hedging, refers to a futures trading method in which traders buy futures in the futures market first to avoid causing economic losses to themselves when buying in the spot market in the future, so it is also called "long hedging" or "short hedging". The purpose of hedging is to prevent the risk of loss caused by future price increases. This practice of hedging the losses in the spot market with the profits in the futures market can fix the forward price at the expected level. Buying hedging is a common hedging method for investors who need spot but are worried about rising prices.