The funds in the futures account are divided into two parts, one is the margin and the other is the available funds. When there is a position, the occupied margin cannot be moved, and the profit and loss are changed at the available funds. When the available funds are zero, it is possible to face the risk of strong balance. At this time, customers need additional funds or close their positions themselves. If the position is not closed in time, the futures company will level it according to the situation, and the deposit will be returned to the account after the position is closed. If the loss has exceeded the margin,