Abstract: From the perspective of the combination of complex network and econometric,this paper studies the activities of the enterprise competition,by building the network model of Chinese beer enterprise competition relationship and analyzing the influence of network model parameter on the scale of beer enterprise in the evolution of network.Taking the network of 2000,2006,2012 years as examples,we choose alternative network topological properties instead of the network parameters,and establish the econometric model of enterprise scale.The results imply that the scale of enterprise has a positive correlation to the node's path length and cluster coefficient,a negative pertinence to the nodes' degree.In terms of trends,competition between beer companies transfers from disorder into order gradually,which brings a new time namely so-called "four-centers with multi-cores situation".In the new time,the first tier(Snow,Tsingtao,Yanjing and Anheuser-Busch InBev) is on the leading position while the rest ones show the trend of multi-cores competition.