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Highway freight index and shopping freight index play an important role in their respective fields.They are studied respectively at home and abroad,but there is no study on the relationship between the two indices.In order to link up the highway freight index and the shipping freight index and make them woke Integrally,a relationship between the two indices is proposed in this work.Based on the analysis of the weekly data of 2016-2017,the Vector Auto Regression model about the two kinds of freight indices is established.