The invention relates to a point-to-point network reputation management method based on a market model. On the base of the P2P routing protocol based on DHT, both buyer and seller and a third party supervisor together manage note reputation. Compared with the prior art, the method has the advantages that: a resources service level obtained by a node is directly related to contribution of the node for a system; users cannot seek profit for selves via unreal feedback information, so as to effectively inhibit the rigged potential motive of the rational users; and damage caused by various attacks of hostile nodes can be resisted. In the assist of the method, the resources service level obtained by the node is directly related to the contribution of the node for the system; the users cannot seek profit for selves via the unreal feedback information, so as to effectively inhibit the rigged potential motive of the rational users; and the damage caused by various attacks of the hostile nodes can be resisted.