One of the important functions of crude oil futures market is price discovery. Traders in the futures market analyze and predict various factors affecting the supply and demand of crude oil market according to themselves, and form the expected oil benchmark price through organized open bidding (16@qq.com). Because this kind of oil futures price refers to almost all the influencing factors of the world crude oil market and their weights, the crude oil futures price is generally regarded as the reference price of the international oil spot market and has an important price-oriented function.