1. Preventing market manipulation: By adjusting the minimum number of open positions of futures contracts, market manipulators can be restricted from influencing the price trend by opening a large number of positions, thus maintaining the fairness and stability of the market.

2. Control market risk: The minimum open position of futures contracts is related to the margin level. By adjusting the minimum open position, we can indirectly adjust the risk level of the futures market and prevent the accumulation of market risks caused by excessive speculation.