This paper aims at empirically analysis on how network relationships affect focal firm’s technological standardization capability, based on the panel data of patents and standards from all 3800 enterprises in cooperative R&D network between 1985 and 2010 in the automobile industry. The data were collected from the National Key Industry’s Patent Information Services Platform and National Library of Standards. The study findings show, both breadth and strength of relationship in the network can influence the enterprise's technological standardization capability positively, the breadth of relationship in the network have a more direct impact than the strength of relationship, the weak related diversity is a mediating variable between the breadth of relationship and the focal firms' technological standardization capability, while the strength of relationship influence the technological standardization capability through strong related diversity. Besides, the strong related diversity is good to improve the dominant advantage in the standards-setting, and the weak related diversity company will likely become the followers in the standards-setting, obtaining more opportunities in different technology fields.