Basically, most goods in the world are priced in dollars, so the change of dollar value has a profound impact on the trend of commodity pricing. The relationship between the two can refer to the figure below. The value of US dollar is generally expressed by US dollar index, and US crude oil futures adopt the trend of wti futures contract of new york Stock Exchange, and the time range is from 2000 to now.

From the figure, we can clearly draw that in the long run, the two are negatively correlated. Therefore, US crude oil futures will expand and the dollar will tend to decline.