Abstract: Reducing transaction costs in the supply chain of road construction projects is clearly the focus for reducing total cost of the supply chain of road construction project.The paper establishes a transaction cost evaluation index system through a large number of visits and surveys.It selects 30 highway construction project samples,extracts a lot of transaction cost data with the use of analytic hierarchy process (AHP) to determine a target weight.Thus,a theoretical basis for the effective evaluation of supply chain transaction costs of road construction project is provided.

Key words: road construction project, supply chain, transaction cost, evaluation, AHP