The search content of node Peer-to-Peer(P2P) users reflects the user interest.So this paper proposes a search mechanism based on keywords relationship and node interest.The mechanism learns focus on the relationship between keywords,finds node by user interest.The use of keywords in the search increases the target semantic relations,and improves the search success rate.According to the node of interest,it narrows search and reduces the search overhead.Experimental results show that the fast index table method and the feedback...