Abstract: Objective: To adapt to urban development and planning adjustments, significant reconstruction is required for existing urban rail transit stations without reserved extension conditions. This research aims to minimize the impact of existing station reconstruction on operations by studying the operational organizational plans during the reconstruction period and after the reconstruction.Method: Taking Chongqing Rail Transit Line 6 as an example, the original route of its phase III project cannot meet the latest planning requirements due to planning adjustments. Therefore, the existing Liujiaping Station is reconstructed to enable the operation of Line 6 and its branch line. Two comprehensive branch line schemes, one with independent operation conditions and the other without, are compared in terms of routing plan, service level, interruption time, operational functions, and project investment. Reasonable temporary operational organizational plans are proposed considering passenger flow predictions, train schedules, and depot calculations during their interruption period.Result & Conclusion: Through the comparison, it is concluded that the branch line scheme without independent operation conditions not only has a shorter interruption time, and lower project investment but also meets operational requirements. The proposed operational organizational plan during the interruption period is deemed reasonable and feasible. The reconstruction of existing lines (stations) inevitably causes interruptions in certain line operations. Therefore, during the reconstruction period, it is necessary to consider comprehensive operational organizational plans for the interruption period, minimizing the impact on operations. After the reconstruction, a comprehensive operational organizational plan should be developed reasonably based on passenger flow characteristics.