Abstract: Aiming at the safety problem in P2P network, a new trust management model based on evaluation of re- sources was proposed in this paper. A concept of praise degree was given firstly, and a single praise degree was compu- ted by fuzzy comprehensive evaluation. hhe transaction log table was saved and managed by mother peers of the one provided resources. When a peer chose which peer to deal with, it considered not only the direct trust value but also the total praise degree of resource. An incentive mechanism based on virtual currency was imported finally to enhance the peers' positivity of participation. The experiment result shows that this trust management model can effectively resist the attack of malicious peers and increase the success rate of network transactions.

Key words: Trust management, Evaluation of resources, Praise degree, Fuzzy comprehensive evaluation, Incentive mechanism