目的:检索、评价和总结小儿外周动脉导管冲洗系统维护的相关证据，为临床提供参考。方法:系统检索Up To Date、BMJ Best Practice、英国国家临床医学研究指南库（NICE）、医脉通、Cochrane Library、Joanna Briggs Institute（JBI）循证卫生保健中心数据库、CINAHL、迈特思创、PubMed、万方、中国知网、维普等数据库关于小儿外周动脉导管冲洗系统管理与维护的二次证据资源。对各类型文献进行质量评价后提取并汇总证据。结果:共纳入9篇文献。形成小儿外周动脉导管冲洗装置基本要求、动脉冲洗方式、注射泵系统冲洗速率、加压袋泵系统冲洗压力、动脉冲洗液、小儿外周动脉导管冲洗系统更换与维护、动脉导管维护的持续改进7个方面共计22条最佳证据。结论:小儿外周动脉导管冲洗系统建立与维护的最佳证据为医护人员的临床决策提供依据，但仍需要实践检验。“,”Objective:To search, evaluate and summarize the evidence related to the maintenance of peripheral arterial duct flushing systems in children for clinical reference.Methods:Up To Date, BMJ, Nathional Institute for Health and Care Excellence(NICE), Chinese Medlive, Cochrane Library, Joanna Briggs Institute(JBI), CINAHL, METSTR, PubMed, Wanfang, CNKI, VIP were used to collect secondary evidence resources about management and maintenance of peripheral arterial duct flushing systems in children. After the quality evaluation of each type of literature, the evidence was extracted and summarized.Results:A total of 9 articles were included in the research. The 22 pieces of best evidence were obtained from 7 aspects, including basic requirements of children′s peripheral arterial duct flushing systems, arterial flushing method, flushing rate of injection pump system, flushing pressure of pressurized bag pump system, arterial flushing fluid, replacement and maintenance of children′s arterial catheter flushing system, and continuous improvement of arterial catheter maintenance.Conclusions:The best evidence for the establishment and maintenance of pediatric peripheral arterial duct flushing systems provides a basis for clinical decision, but practice testing is still needed.