Abstract Entrepreneurs' personality traits have significant effects on firm's growth. This paper built an integrated conceptual model relating narcissism, power of entrepreneur and enterprise growth，relative hypotheses were put forward then. Through the empirical analysis of 194 firms in Secondboard Market, we found narcissism has inverted U type relationship with enterprise growth. And structural power and owner's power have a significant positive impact on the growth of enterprises, they have part intermediary role between narcissism and growth. According to the research results, enlightenments of the conclusions and suggestions of future research were pointed out at the final.