This paper introduces a comprehensive framework for passenger flow enhancement for metro operations. The proposed framework takes into account the state of urban transportation and the forecasting of passenger flow, based on which the internal and external influencing factors on passenger flow are analyzed. By utilizing the Suzhou Metro as a case study, specific strategies for enhancing passenger flow are suggested. This research contributes valuable insights and actionable strategies for metro systems, offering a holistic approach to address the challenges associated with passenger flow enhancement in metro system.