Abstract: This paper selects the oil industry and the textile industry as the representative of monopoly and competition, confirms that monopoly is the main reason for industry wage inequality with Ranis-Fei decomposing method. Further more, through the dummy variable model, it confirms that this proportion close to 40%, and the main reason is administration monopoly. Finally, based on the analysis of this paper, we have some policy recommendations.

摘要： 本文选取石油行业与纺织行业作为垄断与竞争行业的代表，通过费景汉-拉尼斯分解方法证实垄断是解释行业间收入差距的主要原因，并通过进一步建立虚拟变量模型补充分析，证实垄断因素对收入差距影响所占比重近于40%，并主要为行政垄断。最后，基于本文分析给出相应的政策建议。