Summarize: Transit-oriented development (TOD) is a key planning method to meet the challenges of urban sustainable development, but the theoretical mechanism and practical results of the TOD development model still need to be further improved. By tracing back the basic connotation and key mechanism of the TOD concept, it is clear that public transportation andThe integration of land use is the essence of the TOD development model, emphasizing that the fundamental purpose of TOD is not compact, mixed and high-intensity land development, but to improve the competitiveness and attractiveness of public transportation in residents' travel choices, and promote green, low-carbon and sustainable development of cities. In view of the difficulties encountered by the TOD development model in China's practice, it is proposed that "travel behavior" from the perspective of mobile spacePublic transport-LandUse the theoretical framework of the model. Based on the empirical results of the community structure of rail transit travel behavior, it is proposed to take the "corridor" as the main planning scenario.TOD optimization mode in order to provide more and more balanced public transportation;The passenger flow provides urban residents with more convenient employment, residence and recreation options for urban residents. Fund: National Natural Science Foundation Project "Research on the Mutual Feeding Mechanism of Collaborative Development of Multi-level Rail Network Growth and Urban Spatial Structure in Urban Areas Based on Travel Quality Measurement" (Project No.: 5207120292)