The Chengdu-Kunming Railway, commonly referred to as the Cheng-Kun line, is a first-class national railway in China that serves both passengers and freight, connecting the provinces of Sichuan and Yunnan. The railway extends from north to south and is one of the main lines in the southwestern region of China, also being an integral part of the country’s “Three Horizontals and Five Verticals” railway network. It starts from Chengdu Station in the north and reaches Kunming Station in the south, covering a total distance of 1,096 kilometers with 124 stations of various sizes along the route. The designed speed for the railway is 80 kilometers per hour, with some sections upgraded to allow speeds up to 120 kilometers per hour after renovations.
The Cheng-Kun Railway begins in the Chengdu Plain of Western Sichuan, crossing rivers like the Min River and the Qingyi River. It passes through Emei, follows the Dadu River, and traverses the Greater and Lesser Liang Mountains. The railway crosses the Nu River to reach Xichang, spans the Anning River, crosses the Jinsha River, and meanders over thirty times through the Longchuan River Gorge, cutting across the Hengduan Mountains, and finally reaches the shores of Dian Lake in Kunming.
Along its journey, the railway passes through many regions including Pengshan, Meishan, Jiajiang, Emei, Ebian, Ganluo, Xide, Xichang, Dechang, Miyi, Yuanmou, Lufeng, and Anning. By connecting with the Baoji-Chengdu Railway, the Cheng-Kun line can extend northward towards the greater Northwest China, and southward directly to Kunming, reaching the southwestern frontiers and linking with countries in Southeast Asia. This forms a major transportation corridor that traverses north to south and connects with several other east-west rail lines. It plays a vital role in military preparedness, holds strategic significance for industrial production, and integrates key industrial bases such as the coal base in Liupanshui, the steel base in Panzhihua, and the arms industry in Chengdu, fostering a triangular economic cycle where mining and manufacturing industries complement each other. To this day, the Cheng-Kun Railway supports a number of military and heavy industrial cities, such as Panzhihua and Xichang, creating what has been known for over 40 years as the “Industrial Corridor” of Western Sichuan.
成昆铁路(Chengdu-Kunming Railway)，简称成昆线，是中国境内一条连接四川省与云南省的国铁Ⅰ级客货共线铁路;线路呈南北走向，为中国西南地区的干线铁路之一，也是中国三横五纵干线铁路网的一纵。成昆铁路北起成都站、南至昆明站，线路全长1096千米，共设大小车站124座，设计速度80千米/小时，局部路段经改造后提速至120千米/小时。 成昆铁路北起川西平原成都，跨过岷江、青衣江;经峨眉，沿大渡河、横贯大小凉山;十跨牛日河、抵达西昌;八跨安宁河、过金沙江;三十余次迂回穿越龙川江峡谷，穿过横断山脉，南至滇池湖滨昆明。 成昆铁路沿途经过彭山、眉山、夹江、峨眉、峨边、甘洛、喜德、西昌、德昌、米易、元谋、禄丰、安宁等地区。成昆铁路接宝成铁路可北上大西北，又能南下昆明直达西南边疆，与东南亚地区国家衔接，形成纵贯南北并与多条东西走向干线铁路相接的大通道;对军队备战的作用举足轻重，对工业生产有战略意义;它将煤炭基地六盘水、钢铁基地攀枝花和武器基地成都串联成一体，促成三角循环体，使得采矿业和加工制造业相辅相成发展。时至今日，成昆铁路撑起了攀枝花、西昌等一大批军工、重工业城市，其40余载造就川西”工业走廊”。
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