Abstract: Community structure is one of the ubiquitous topology characteristics of complex network.In order to divide the community structure effectively in complex networks,this paper introduced the concept of community strength coefficient based on the definition of community strength,and put forward a kind of community structure detection algorithm based on community strength coefficient.The algorithm has a lower time complexity,and it looks for a network node that has maximum degree of intensity coefficient and its neighbor nodes to calculate the community strength coefficient and measure how to divide the community.The simulated experiment was mainly made based on Zachary network and Dolphin network to verify the feasibility and effectiveness.The algorithm has higher accuracy,better sensitivity and better extensibility to divide community.

Key words: Community structure,Strength community,Community strength coefficient,Neighbor node