Abstract: In response to the strategic concept of “Belt and Road”， CPIT International Transportation Corridor （ChinaPakistanIranianTurkey） has been planned and constructed. The existing research on the construction and feasibility of the channel has a prototype， which is necessary to systematical arrangement of the channel to further complete the planning. This paper summarizes the spacetime structure and ability structure of the international corridor among China， Pakistan， Iran and Turkey， sorted out the historical stage and capacity development of the channel. Finally， the conclusion is drawn that in terms of transportation capacity， the continuous planning and construction of the CPIT International Transportation Corridor is a livelihood project benefiting China， Pakistan， Iran， Turkey and the surrounding countries along the corridor as well as European countries.

Key words: economics of transportation, spacetime structure, ability structure, ChinaPakistanIranTurkey, international corridor

摘要： 为响应“一带一路”倡议，中巴伊土国际通道（中国—巴基斯坦—伊朗—土耳其）开始规划构建，现有对该通道的构建及可行性等的研究已具雏形，目前需要对通道做系统整理，促使规划能进一步圆满。为此，梳理中巴伊土国际通道的时间结构、空间结构、能力结构，整理该通道发展的历史阶段及能力发展状况，得出在交通运输能力方面不断规划与建设该通道，是一个惠及中国、巴基斯坦、伊朗、土耳其及其他沿线国家和欧洲国家的民生工程。

关键词: 交通经济学, 时空结构, 能力结构, 中巴伊土, 国际通道