由于长期缺乏通畅的交通运输线,我国西南地区物流成本高昂,受地理环境制约,经济欠发达。40尺货柜从四川成都运至广西防城等港口,每箱的铁路运输成本达8000元至9000元,公路运输成本达23000元至26000元,导致一些企业不得不向东部转移,降低了西部地区的竞争力,制约了我国西部地区对外开放的水平。大西南货物往往宁可远取广东、 Due to the long-term lack of smooth transportation lines, the cost of logistics in southwest China is very high, constrained by the geographical environment, and the economy is underdeveloped. 40-foot container from Chengdu, Sichuan Province to Fangcheng, Guangxi and other ports, the cost of rail transport per box of 8,000 yuan to 9,000 yuan, road transport costs up to 23,000 yuan to 26,000 yuan, resulting in some companies have to shift to the east, reducing the western region Which restrict the level of opening to the outside world in the western region of our country. Southwest goods are often far away Guangdong,