Abstract: Aiming at the integration difficulties in the application of blockchain and traditional businesses in the transportation industry, this paper started with management and technical aspects involved in the sampling inspection of transportation products. The lack of credibility of the current transportation product inspection results and the quality risks in the entire inspection process were investigated and analyzed. Combined with the characteristics of blockchain decentralization, openness and transparency, non-tampering, verifiable and traceable, a transportation product sampling system node setting and data flow application scenarios block on the blockchain was clarified, realizing the whole process immutability and traceability of important node information, which promoted the authenticity and accuracy of detection results and provided quality assurance for the construction of quality engineering projects.