Market risk is the risk brought by market price fluctuation. Futures trading is a highly leveraged transaction, which covers relatively huge changes in principal with a small amount of margin. When the market price fluctuates, it will bring high profits or huge losses. In addition, today's futures commodity prices fluctuate frequently, and the influencing factors are diverse, so the market is difficult to predict.

Just like the subprime mortgage crisis in America, you can get a house with little or no down payment. Everyone thinks that prices will keep rising, buying and selling, selling and buying. Until the price drops, it can't be sold and the cost can't be recovered.