Example of hedging: If you are an enterprise, you want to trade with a foreign company, but the currencies used by both of you are different. For example, your company and other companies agree to conduct a transaction at a certain time in the future, and other companies invest in your company's products, and the transaction price is XX dollars. You are worried that the depreciation of the US dollar against the RMB will affect the expected income, so do the opposite in the foreign exchange futures or forward market to make up for your reduced income due to the depreciation of the US dollar.
Speculation: It is the same as ordinary futures speculation, except that the target is foreign exchange. Futures trading is to obtain speculative profits by judging the future trend of foreign exchange.