Abstract: By applying the social network analysis, this article analyzes the characteristics of enterprise network in the perspective of parent-subsidiary corporation contact based on the mid-Yangtze urban agglomeration listed company data of year 2014. The results are as follows. (1) In the mid-Yangtze urban agglomeration, the enterprise network is low, the overall enterprise network is weak and the network presents an core-periphery structure obviously. (2) The provincial capital citieshave the prominent effect of agglomeration and diffusion in the middle Yangtze urban agglomeration, and the central city driving effects is remarkable; It is serious for the urban intermediary polarization with that Changsha and Wuhan are prominent in the intermediation. Besides, the transport distance between the enterprise and the investment destination is short, and the accessibility is at a higher level. (3) The overall network of enterprise external contact is in low connection and initial development level. (4) Hierarchical network shows that low-level enterprises are mainly concentrated in the surrounding provinces and geographical proximity areas, the highest level of contact points to high-hierarchy citys. The lower the network level, the more complex the network. Node cities in the direction of association showed significant differences.
Key words：Pattern characteristics；listed companies； Social network analysis；  Middle Yangtze urban agglomeration