(1) After the financial crisis, the demand of the real economy dropped sharply.

Oil is called "industrial blood", and its price trend is closely related to the performance of the world economy.

(2) Speculative manipulation instigated by financial speculators.

As early as the beginning of the surge in international oil prices in 2008, the Organization of Petroleum Exporting Countries believed that the surge in international oil prices was mainly due to speculation in crude oil futures. Qatar's Minister of Energy Industry, attiya, believes that the Organization of Petroleum Exporting Countries should not be the scapegoat for high oil prices, but international financial speculators are the culprit.

(3) Political commodity is a sharp weapon for great power competition.

One fact that can't be ignored is that with the world's increasing dependence on energy, oil is no longer a dispensable common commodity. "Petroleum weapons", "petrodollars" and "energy partners" have always been important weights in the international political contest. Energy exporting and importing countries also devote their energies to diplomacy and seek political, economic and strategic interests.