Note: when trading futures, you need to know the relevant trading rules, so that you can correctly express your own instructions. Therefore, we suggest that investors can familiarize themselves with trading rules by using simulation trading software before formal trading, so as to reduce their risks in actual trading. (1) Direction problem Futures trading is two-way. To be precise, there are four instructions: buy and open positions, sell and open positions, buy and close positions, and sell and close positions. When you want to open a position, open a position; When you want to close your position, knock out the position. If you are bearish on the market, you can short at a high level. At this time, it is necessary to knock and sell to open the position, and operate in the opposite direction when closing the position, and knock and buy to close the position. This is also the case. (2) Pay attention to the change of the lowest price of the contract. In particular, the minimum change price of soybean oil, TA, rapeseed oil and palm oil contracts is 2, and you can't knock the singular number when entering the price by entrustment; The minimum variable price of cotton, natural rubber, zinc, aluminum and polyethylene is 5, and the entrusted price must be a multiple of 5; The minimum fluctuation price of copper is 10, and it must be a multiple of 10 when the price is entrusted. (3) Dalian and Zhengzhou Commodity Exchanges do not allow natural person customers to enter the delivery month, and individual customers should pay attention to the time of holding positions. The Shanghai Stock Exchange allows natural person customers to enter the delivery month, but one or two months before the delivery month, all customers must adjust their positions to integer multiples according to the trading rules. Among them, gold is adjusted to be an integer multiple of 3 lots, copper, aluminum and zinc are adjusted to be an integer multiple of 5 lots, and fuel oil is adjusted to be an integer multiple of 10 lots. Therefore, only enterprises can make delivery, please pay attention to investors.