The measurement of the attraction range of the rail transit station is of great significance to the planning of the track network, and it also directly affects the choice of travel modes of the residents. The range of passenger flow services at the track site is characterized by a site-centricity, and as the distance increases, the attraction to travellers decreases. This paper first classifies the rail transit stations, and then combines the travel characteristics of each green traffic and the route direction, divides the circle layer of the rail transit station, and then determines the attraction range of each green travel mode through the model. Finally, the case analysis determines the track of the Nanjing track station. The analysis of the attractiveness of the network is determined and rationalized. Key words：Rail transit site; Connection; Attraction range

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