本文采用艾森哈特的案例建构理论方法，以四位著名企业家的从业前经历作为案例，根据企业家的自传和相关文章，应用事件系统理论的方法进行从业前经历的关键事件分析，并与企业家的领导风格相联系。经过案例内分析和跨案例分析，得出从业前经历影响领导风格的三条结论：一是海外或高校求学经历更可能影响企业家自信心的提高，二是生活环境剧烈变化更倾向于对市场洞察力和预见能力的提高有影响，三是童年时期的苦难经历更可能让企业家在从业后对目标有着更坚定的信念，对企业家的自我管理和成长具有理论和实践意义。

This paper adopts Eisenhardt's case construction theory method, taking the pre-employment experience of four famous entrepreneurs as a case, according to the autobiography of entrepreneurs and related articles, applying the event system theory method to analyze the key events of pre-employment experience, and linked to the entrepreneurial leadership style. Through case analysis and cross-case analysis, three conclusions are drawn from the pre-employment experience that influences the leadership style. First, overseas or college study experience is more likely to affect entrepreneurs' self-confidence, and second, the dramatic changes in the living environment tend to have impact on market insights and the improvement of strength and foresight ability. Third, the experience of suffering in childhood is more likely to give entrepreneurs a firmer belief in goals after they are employed. The conclusions have theoretical and practical significance for entrepreneurs' self-management and growth.