元初数十年间 ,云南通四川、湖广的驿路经历了较大的变迁 ,最先发展的是由北境入川的建都道 ,继之开通的是从东北境入川的乌蒙道 ,再后新辟了出东境通湖广的普安道。三道并行 ,改变了云南以至西南地区的交通格局 ,有利于云南与中央政权及内地一些省区的联系和交往 ,并对明清云南与内地间的交通发展产生了直接而深远的影响 In the early decades of the first year of the Yuan dynasty, the postal routes of Yunnan-Sichuan and Huguang districts underwent a great change. The first development was the construction of the capital city from the northern border to the plain, followed by the Wumeng Road from the northeast border to the plain, After the new out of the East through the Lake Canton Pu’an Road. The three parallel reforms changed the traffic pattern in Yunnan and even in the southwest, which facilitated the contacts and exchanges between Yunnan and the central government and some provinces and regions in the Mainland and had a direct and far-reaching impact on the traffic development between Yunnan and the hinterland during the Ming and Qing Dynasties