Why is the gap between spot price and futures price of coal so big? Because the spot price is the real-time transaction price, the futures price is the future price, such as the price after one year. If you watch too much, coal will go up in a year, then you should buy more. If you expect it to fall after one year, then you will buy it down, because futures trading is not on the specified date, and futures are expected to rise in the future.