Abstract: Based upon the characters of the sharing files in Peer-to-Peer（P2P） overlay network，a language based P2P overlay network is proposed.The language types of the peers are identified by some algorithms，and they are organized by their different labels.Also，when a peer processes a query，the query will be first classified to a language，and the search will be implemented in the language corresponding peers.After this topology is applied，the successful rate of searching is significantly improved.In addition，some language dependent achievements which are obtained in the area of natural language processing，can be well used after language identification of the peers.

摘要： 基于Web语言分布和P2P中共享信息的特点，提出了一个基于语言类别的P2P覆盖网络。该方法通过对节点共享信息的语言进行识别，将节点根据不同的语言类别进行组织，查询时对查询问题进行同样的分类，并在对应语言类别中进行查找。仿真表明，该方法有效地提高了不同语言用户的查询成功率，同时便于已有语义分析技术在P2P网络中的进一步应用。