本文提出了城市轨道交通系统“层级规律”的概念。指出,轨道交通和城市空间之间通过相互作用形成一种新的结构,其界面规律约束着车站乘降能力、线路长度、线网规模与形态布局。需要在走廊层次上实现居住与就业的均衡前提下决定车站乘降能力,根据“1h法则”所决定的线网功能层次结构分析和选择线路长度并相应的速度等级,从轨道交通与城市空间之间的互动、整合和协同发展的角度分析和选择线网规模和形态布局。 This paper puts forward the concept of urban rail transit system “level rules ”. It is pointed out that a new structure is formed through the interaction between rail transit and urban space, and the interface rules constrain the capacity of stations, the length of lines, the size of network and the pattern layout. It is necessary to determine the station’s ability to take-off and landing on the basis of the equilibrium of living and employment at the corridor level. According to the analysis of the functional hierarchy of the line network determined by the law of 1h and the selection of line length and the corresponding speed grade, Space interaction, integration and coordinated development of perspective analysis and selection of network size and shape layout.