Abstract: A study on the functions，such as large producing area，living area，recreational facilities，public service facilities， educational facilities，traffic facilities and others which influence urban spatial structure was conducted． The rail traffic network which was suitable for the Xi’an urban spatial layout was put forward and expected to provide a basis for the Xi’an rail traffic network planning．

Key words: rail traffic, urban spatial layout, functional layout, network planning

摘要： 从影响城市空间结构的大型生产区、生活区、游憩设施、公共服务设施、教育设施、交通设施等功能进行研究， 提出了适合西安市城市空间布局的轨道交通线网，以期能对西安市轨道交通线网规划提供依据。

关键词: 轨道交通, 城市空间布局, 功能布局, 线网规划