一般来说，期货交易软件盘面显示的期货指数，包括每个商品的指数和商品总价格指数都是按照持仓量成交量按照一定权重配比，再进行加权平均而得来的。
各个单商品指数是根据此商品所有合约的价格、持仓量等条件综合计算而得出来的，例如沥青指数，是由沥青期货的每个合约综合计算得出，可以反应这个商品每天波动的整体情况。
那诸如文华指数、南华指数这些，以及我们自己的红箭指数，则是包含了全商品的一个指数，这个指数的涨跌可以很直观的反应商品总体的走势，可以给投资者直接了解商品总体趋势的一个指标，类似于股票里面的上证指数、深证成指、创业板指数等。
商品指数化近些年也被提上日程，甚至后面可能会出现指数期货，就像股指期货一样，指数中会有一些涨跌幅比较大和最近非常热门的品种，会有固定的时间来调整指数中包含的品种。
总的来说指数对于投资者而言，是投资商品期货的一个指标，可以有更好的参照物来反应市场整体的情绪。
Generally speaking, the futures index displayed by the futures trading software, including the index of each commodity and the total commodity price index, is based on the position volume according to a certain weight ratio, and then weighted average.
Each commodity index is calculated according to the price of all the contracts of the commodity, the position and other conditions. For example, the asphalt index is calculated from the asphalt futures contract, which can reflect the overall situation of daily fluctuations of the commodity.
That such as mandarin index, the index of south China, and our own red arrows index, is a contains all commodity index, the index of price can be very intuitive reaction products overall situation, can give investors know goods directly, an indicator of the overall trend is similar to the inside of the Shanghai stock index and shenzhen component index, the index of the gem, etc.
Commodity indexation has also been on the agenda in recent years, and may even be followed by index futures. Just like stock index futures, index futures will have a fixed period of time to adjust the varieties included in the index.
Generally speaking, the index is an indicator for investors to invest in commodity futures, which can provide a better reference to reflect the overall mood of the market.