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.