Crude oil is the upstream raw material of asphalt, and there is a strong correlation between their prices. For asphalt industry, the influence of upstream industry is mainly reflected in the fluctuation of crude oil price and crude oil processing capacity, which brings the fluctuation of petroleum asphalt output and product price. From the downstream demand, asphalt products are mainly used to pave highways, municipal roads, bridges and airports, and the consumption of asphalt in highway construction accounts for 82%. In the case of a certain production capacity, the increase of downstream demand will further push up the price of asphalt products, and vice versa. Crude oil prices rise and fall before asphalt prices.

From the influence mechanism, when the price of crude oil rises, the cost of raw materials for producing petroleum asphalt increases. Under the condition that the price of downstream products remains unchanged, the profit space of production enterprises is reduced, the production enthusiasm of related enterprises is reduced, and the supply is reduced to support the price increase. On the other hand, when the price of crude oil falls, the cost of raw materials for producing petroleum asphalt will decrease. With the price of downstream products unchanged, the profit margin of production enterprises will increase, the production enthusiasm of related enterprises will increase, and the increase in supply will suppress prices. Therefore, the change of crude oil price changes the relationship between supply and demand of petroleum asphalt by affecting production cost, profit and plan, and finally affects its price. From the historical trend of crude oil price and petroleum asphalt, there is a certain positive correlation between them.