Yunnan has a developed road network centered at Kunming City. The highway network connects with the network of neighboring provinces such as Sichuan, Guizhou, Guangxi and Tibet as well as the neighboring countries such as Myanmar, Laos, Vietnam and Thailand.

Over a decade ago, the mileage of Yunnan highways has reached 65,800 km, second only to Sichuan Province in China, among which there are 7 national highway lines, 6,081 km; 61 provincial lines, 8,971 km; county - level highway lines, 30,950 km and country roads, 19,757 km, and now highways lead to every township.

Ten thousand length of highway in Kunming link Yunnan with other provinces and other countries. In the year of 2002, Yunnan had the highest high traffic mileages among all provinces in China. 1,570 towns in Yunnan can now be accessed via highway.