Abstract: This paper collected panel data of patents and standards from all 3800 enterprises that own co-patents between 1985 and 2010 in the automobile industry. It constructed a collaborative R&D network based on the data of co-patents and measured the degree of competitiveness or complementarity between companies by means of technological similarity, aiming at investigating how the competition and complementarity of collaborative R&D network influence the enterprise’s technical standardization capability. Empirical studies have found that enterprises have set most technology standards, when involved in a properly competitive cooperative network. While in a competition-oriented network, enterprises tend to improve their knowledge absorption capacity and knowledge integration capacity by carrying out technological diversification activities, Strengthen compatibility with supporting technologies, and thereby improve enterprise’s technology standardization capability. When the competition becomes very fierce with the reduction of the complementarity between enterprises, the willingness to share knowledge with each other will reduce. It will inhibit the improvement of enterprise’s technology standardization ability.