清初,鄂尔多斯南缘农牧交错地带形成独特的禁留地。这一制度是当时严峻形势的结果。康熙年间,随着内地形势趋于稳定,鄂尔多斯部又在历次战争中积极效力,封禁政策开始松弛。康熙四十七年,为管理越界进入宁夏境内游牧的蒙古人,理藩院派驻宁夏两名理事司员。本文考证后认为,理事司员初设时,一员驻扎在宁夏城,一员驻扎在横城。康熙六十一年,为应对出边种地汉民增多导致蒙古民人交涉事务频发的现实,朝廷将原驻横城的理事司员移驻神木。 Early Qing Dynasty, the southern edge of Erdos farming and pastoral areas formed a unique banned area. This system is the result of the grim situation at the time. During the reign of Emperor Kangxi, with the stabilization of the situation in the Mainland, the Erdos Division also played an active role in all previous wars, and the embargo policy began to slacken. Forty-seven years of Kangxi, in order to manage cross-border into Ningxia nomadic Mongols, Li Fan Academy stationed in Ningxia two director. After the textual research, I think that when a director was first set up, one was stationed in Ningxia City and one was stationed in Hengcheng. In the sixty-one year of Kangxi’s reign, in response to the reality that the number of Han-type farmers in the border areas has increased and the number of people involved in the negotiations has been frequent in Mongolia, the court moved the former director-general of Hengcheng to Shenmu.