High-quality development is the new development requirements put forward by the state for public hospitals.Under the background of the new medical reform,refined management is an important means and way for public hospitals to achieve high-quality development,continuously improve the quality of medical services and improve patients' medical experience.The International Medical Department is one of the important components of the hospital to comply with the needs of social development,provide high-quality,high-end and personalized diagnosis and treatment for patients,enrich the multi-level and multi-angle service channels of the hospital,and comprehensively improve the quality and level of outpatient medical treatment.Taking the Outpatient Department of International Medical Department of the First Affilated Hospital of Dalian Medical University as an example,this study adopts measures such as process optimization as the main line,personnel management as the key,innovation-driven,data utilization as the starting point,and refined management to provide flexible and efficient diagnosis and treatment methods,improve operational efficiency,strengthen information support,and enhance patient satisfaction.To explore the application practice of outpatient refined management in the International Medical Department from the perspective of high-quality development,and provide ideas and references for boosting hospital cost reduction and efficiency,and realizing double gain of economic and social benefits.