The fluctuation of futures price is mainly caused by the inconsistency of long and short views. If someone is bullish, he will buy. If someone is bearish, he will buy down, and many buying and selling forces will gather together, resulting in continuous price fluctuations! Then, the main reasons for the price bullish and bearish are: 1, the change of supply and demand, 2, the influence of national economy, 3, the influence of substitutes, and 4, the influence of international trends.