This paper analyzed the existing problems in the supply chain system

proposed a trust model of hybrid P2P supply chain based on interest group in order to improve the confidence crisis in the supply chain among enterprises.The model uses interests similarity to characterize the services behavior similarity in the preferences fields for enterprises

and adpots trust and credibility attenuation mechanism to achieve the trust evaluation of node in the supply chain.The experimental simulation results and comparison show that

the model could build efficient

reliable

trust cooperation between enterprises in supply chain

prevent effectively the moral hazard

realize information sharing and resources integration for each node in supply chain

and improve efficiency.