Precious metals are the general name of eight metals such as gold, silver, platinum and palladium, and their transactions are divided into block transactions and electronic transactions. At present, most precious metal transactions in the market are electronic transactions, and leverage is increased in the form of margin for investors to buy and sell. At first, it appeared in the form of futures for spot traders to hedge the risk of price fluctuation, and later it gradually evolved into speculative trading, collectively known as financial derivatives investment.