Abstract:(Jiangsu University, Management School, Zhenjiang 212013)#$NL: The promotion of technology innovation in alliance enterprise is a basic function of patent alliance. China Patent Alliance appeared in short time, lacking of experience, and has not yet produced profound effect. The alliance trait has important effects on alliance technology innovation. An empirical test reveals the growth mechanism of technology innovation of alliance enterprise in patent alliance, and discovers the effect paths of alliance trait in technology innovation of alliance enterprise, and put forward the improvement strategies of technology innovation of alliance enterprise, so as to further improve the market value of the patent alliance. The study conclusions have practical significance on China"s patent alliance and alliance enterprise development.