Qunmusuo was one of the military organizations of the Prince’s Mansion in the Ming Dynasty, organized by Qianhusuo,also named "Qunmu Qianhusuo".Qunmusuo belongs to both the Prince’s mansion and the Dusi Weisuo system. It was involved in many affairs, such as breeding livestock, cultivating military colonyl and, supplying firewood and charcoal, and guarding the Prince’s mansion, which is very important to understanding the military system and seignior issues in the Ming Dynasty. However, in the past, research on the military organization of seigniors in the Ming Dynasty focused on the Wangfu Huwei, and only afew scholars paid attention to the Qunmusuo. In the early Ming Dynasty,Prince Jin’s mansion established Jinfu Qunmusuo. In the 21st year of Yongle, the Ming government allocated a thousand troops from the three guards in Taiyuan to serve Zhu Meigui, King of Pingyang. Many of them come to Linjin County, Puzhou, Pingyang Prefecture, southwest of Shanxi Province, to cultivate militarycolony land and herd horses. In the second year of Xuande, the Ming government abolished Zhu Jixuan, King of Jin, and three Taiyuan Huwei, Jinfu Qunmusuo, and Jinfu Yiweisi. A year later, soldiers accompanying Zhu Meigui were transferred to the nearby Pingyang Guard and established the Pingyang Guard’s Zhongyousuo. In the tenth year of Xuande, Zhu Meigui, King of Pingyang, was granted the title of King of Jin. The Ming court reset Jinfu Qunmusuo. This Jinfu Qunmusuo is mostly composed of troops who previously served Zhu Meigui. These officers and soldiers successively went through the process of transferring from Prince Jin’s mansion to Pingyang Wei and from Pingyang Wei back to PrinceJin’s mansion. They inherited garrison land and horse ranching land and continued to stay in southwestern Shanxi. The office of Jinfu Qunmusuo located at the King City of Jin, the military officer who served as Zhengqianhu were not allowed to leave King City. In addition, at least three Fuqianhuwas responsible for managing the military colony land, and two of them led the army to cultivate military colony land and herd horses in southwestern Shanxi. Research on the establishment and operation of the Jinfu Qunmusuo can not only effectively promote the study of Qunmusuo and deepen the understanding of the military system within the Ming government but also help to rethink the transfer and transformation relationship between the military organizations of the Prince’s mansion and General Weisuo and thus more fully understand the military management system of the Ming dynasty.