This paper thinks that the important premise for the formation of modern borderland theory is the appearance of nation-state. The mercantile system and the colonialism expansion are the impulsion of modern borderland theory during the period of the springing-up and development of capitalism. 文章认为,在资本主义的产生、发展时期,民族国家的出现是近代边疆理论形成的重要前提,重商主义与殖民扩张则是近代边疆理论形成的内在动力。