E-commerce environment improves the efficiency of information flow in the supply chain, and realizes information sharing of all aspects. Information sharing in each node enterprise makes more rational use of resources, reduces the dead time of all aspects, and advances the operational efficiency of supply chain, which plays an increasingly important role in the orderly operation of the entire supply chain. While network technology and IT facilitate supply chain management, their security risks have brought trouble to the effective operation of the supply chain, which restricts the operation and development of the supply chain. Therefore, the supply chain information risk management issues are paid more attention. In this situation, I study and analyze the information risk of the supply chain in e-commerce environment, also explore the corresponding information risk. This helps provide decision support for enterprise information risk analysis of supply chain and has important practical significance to the accurate and efficient operation of the entire supply chain in e-commerce environment.