This paper systematically summarizes the connotation of entrepreneur personality traits, especially focusing on the concept and dimension division of entrepreneur personality traits in existing literature, and finds that extroversion, neuroticism, agreeableness, conscientiousness, openness to experience and risk taking are the main personality traits of entrepreneurs. The impacts of entrepreneur personality traits on entrepreneurial output have been concerned by researchers, but there is no consensus. This paper systematically sorts out related research context, discovers the research transformation from the analysis of direct effects of entrepreneur personality traits at the early stage to the revelation of indirect effects of entrepreneur personality traits on entrepreneurial output from the perspectives of cognition, behavior theory, strategy orientation and learning, to try to solve the conflicts of related research. Finally, this paper proposes a number of future research directions based on the shortcomings of existing research.