郎中令(汉武帝太初元年后改称光禄勋),是汉朝九卿之一,以往学者对此已有所论述。本文重在分析郎中令在西汉一朝的演变过程及其动因。郎中令在宫廷政治中扮演了重要角色,随着对宫廷政治参与的深入,开始了文官化,宿卫宫廷的职能日渐丧失。儒生对这一职位的占据,郎选方式丛生的弊端以及郎官战斗力的丧失,进一步确立了光禄勋的文官性质。 Langzhong order (Emperor Wudi was renamed Guangluxun after the first year of the Han Dynasty) was one of the Han dynasties, which was discussed by scholars in the past. This article focuses on the analysis of Langzhong’s evolution and motivation in the Western Han Dynasty. Lang Lang played an important role in the court politics. With the deepening of political participation in the court, civil servants began to become civilized, and the function of the court was diminished. Confucian scholars occupy this position, the disadvantages of the Lang selection pattern and the loss of the fighting power of the Lang official further established the civilian nature of Guangluxun.