Abstract: ［Objective］ To enhance the overall efficiency of vehicle base engineering, reduce investment costs, and strengthen the technical reserves and adaptability of process design, research is carried out on the design schemes for operation workshop tracks in city (suburban) railway vehicle bases. ［Method］ Based on the Ningyiyang (Nanjing-Yizheng-Yangzhou) City (Suburban) Railway project and considering the characteristics of city (suburban) railway vehicles and operational organization plans, the total design scale of the vehicle base is determined through standards and workload related to vehicle maintenance and operation. The design scale for Longtan Vehicle Base and Yangzhou West Stabling Yard are derived in accordance with site land scale availability. A comparative analysis is conducted from four aspects—building footprint area, additional land area, track length, and long-term development adaptability—regarding phased implementation and reservation of Longtan Vehicle Base operation workshop tracks in near and long-term. Additionally, a general layout scheme for the Longtan Vehicle Base is proposed, incorporating reserved conditions for the over-station development and fully automated operations. ［Result & Conclusion］ The final selected design scheme for Longtan Vehicle Base operation workshop track adopts a composite layout with 4-car and 6-car train formations and implements a mixed formation parking and inspection plan for 2 trains on a single track. The front section of the workshop track is constructed based on the 6-car formation standard, while the rear section is compatible with 4-car operations. The end section reserves the conditions for further extension to 6-car formation standards, forming a scalable, composite-functional layout. The depot track facility covers a base area of 30 304.8 m2, requires no additional land, includes a total track length of 4 095 m, and provides strong adaptability for long-term development. This phased implementation scheme effectively conserves land use scale and building area while enhancing the near-and long-term economic efficiency of vehicle base.