From the above rules, it can be seen that in the process of stock index futures trading, when the members are unable to engage in financial futures brokerage business for some reason, or in the case of merger, division, bankruptcy, etc., the members apply for moving positions and get the approval of the Exchange, or move positions at the request of the China Securities Regulatory Commission. In commodity futures investment, in order to keep the futures contracts in our hands the most active contracts, we will transfer the contracts in recent months to more active contracts. For example, foreign index funds that only make long positions will always hold these positions after buying commodity futures, mainly by constantly moving their positions to long-term positions.