With the development of Internet and computer technology, network security attracts people's attention. In reality, you can use the network to explain complex ideas and analyse the actual network, and complex network is a very important fea-ture of community structure . Therefore, a network layout algorithm is proposed based on the community structure using the on-line communities attached to the network discovery algorithm dividing the nodes, and abstracts the community as a node , and the correlation between each node form sa network.The algorithm uses physical analogy method to determine the community center point and the conditions merit accomplishinglayout optimization of the network topology. Compared with the traditional layout algorithm,this physical layout algorithm is better at security, efficiency and structure.%随着互联网技术以及计算机技术的发展，网络安全越来越受到人们的重视。在现实当中，可以用复杂网络的思想解释和研究很多真实的网络，而社区结构正是复杂网络的一个很重要的特征。因此，提出一种基于社区结构的网络布局算法，利用附在网络社区发现算法划分网络当中的节点，并且抽象社区为一个节点，每个节点之间相互关联，形成一个网络。而社区中心点的位置采用物理类比的方法来确定，运用条件择优方式完成网络拓扑的布局优化。这种物理布局算法相比传统的布局算法而言更加安全高效，结构也更加清晰。
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