The nature of transportation lies in the people’s communication and the circulation of goods and its impor-tance is decided and attributable to the development of human’s society .The spatial extension and historical existence of transportation network are closely-linked with such factors as nature ,economy ,politics ,culture and technology .The transformation of communication may decide the width and depth of human’s mutual interaction .Various means of trans-portation and techniques are one of human’s earliest civilization achievements .The ancestors of Zhaotong tried to break the state of closeness and braced themselves for the open outside world which illustrates their precious wisdom of survival and strong will of life and the pursuit of a better life .%交通的本质乃是人员的交往与货物的流通，其重要性是随人类社会与生俱来的。交通网络在空间中的延伸和历史上的存续，与自然、经济、政治、文化、技术等因素，都有着千丝万缕的联系。交通方式的变革决定着人类空间相互作用的深度和广度，各种交通工具和技术是最先传播的人类文明成果之一。昭通先民突破封闭走向开放的足迹，向后人展示了他们宝贵的生存智慧、坚韧的生命意志和美好的生活憧憬。
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