Discussion about innovation network in industrial cluster on a space scale has gradually become a research hotspot in recent years. This essay focus on innovation network research with views Of lbcal, transclocal and global respectively, by emphasizing various actors＇ communicating characters Considering how external connections are built up. Petroleum equipment manufacturing industry in Dongying, Shandong Province is taken as an example to look into the innovation network＇ s structure and spatial characters of the county and the industry. In terms of endogenous industrial cluster, vast and diverse relationship capital turns out to be important for local innovation network and cooperation based on organizational relations is predominant in regional and global scale while economic relationship and knowledge innovation feature in innovation link. Finally we put forward the significance and shortcomings of this paper.