This paper uses cointegration analysis method to estimate the correlation between China’s per-capita consumption expenditure and the amount of soybean imported from the United States. It is found that importing soy from the United States can reduce China’s per capita consumption expenditure. There is a long-term equilibrium between the per capita consumption expenditure and the imports of soybean native to the United States. In the short term, one of them can have a lasting impact on the other.