P2P networking quality optimization method

The invention provides a P2P networking quality optimization method. The method comprises following steps of initializing a node management list, allocating and adding newly added nodes to different grades according to the uploading capacities of the newly added nodes; when the nodes add, exit and are timeout, and operator information, province information, city information or grade attributes are changed, updating the node management list; checking layer states of all grades and optimizing layer structures at a fixed time, wherein when it is found that a certain layer of grade needs to supplement nodes, a highest quality of node among the nodes of the under layer is selected to be supplemented in the layer; then adjusting the layer structure, selecting the highest quality and worst quality of nodes of each layer, promoting the highest quality of nodes by one grade layer, and reallocating grade layers for the worst quality of nodes. Through adoption of the method, effective classification management can be performed on the nodes according to different attributes, the nodes of all grade layers can be automatically adjusted in layers, so as to optimize the node grade layer quality, and the node can rapidly find the best node in partner node matching.