Reducing the average days of hospital stay, can effectively reduce the financial burden of patients,improve the utilization of health resources. TheSarticleSaimedSto researchSthe using of PDCA in management of hospital stay. The content included the management plan. Implementation, influence factors and so on. Finally, it triedStoSbring forward further measures for continuous improvement,to continuously reduce tthe average days of hospital stay, ease the hospitalized difficult.