Narcissistic personality is an important factor that affects employees' job performance. Analyzing the relationship between narcissism and job performance has a profound impact on the recruitment, selection, assessment, and promotion in the organization. Through combing and summarizing relevant literature, this paper constructs the conceptual framework of narcissism忆s influence on job performance, and analyzes the occurrence path of narcissistic personality's influence on job performance. It is found that narcissism has a more prominent negative impact on job performance, but it will also play a positive role in certain situations. The psychological process and characteristics of narcissists, and specific situations are the main factors affecting the relationship between them. Based on the research conclusion, narcissism and the mechanism of narcissism' s influence are of great help to effective intervention by the management, and it is necessary to continue the research in this field in the future.