Position gain and loss is an unrealized gain and loss, which is usually not recognized as investment income according to the income of accounting subjects in realization principle. However, due to the high risk of futures investment, it is necessary to disclose it in order to provide decision-making information to users of financial statements. Therefore, it can be reflected in the futures investment income account, and it can also be reflected by setting the position gain and loss of the secondary subject under futures, which is different from the realized futures investment gain and loss.