1. Sudden and violent fluctuation of market price: Sudden and violent fluctuation of market price will lead to a huge deviation between the position price of futures grid trading and the market price, thus making the balance of trading account insufficient to maintain the position.

2. Improper grid line setting: Improper grid line setting will lead to too many or too few positions, thus making the balance of trading account insufficient to maintain positions.

3. The leverage ratio is too high: futures trading usually uses leverage trading. The leverage ratio is too high, and the risk tolerance of trading accounts is insufficient, which is prone to short positions.