To review and analyze the construction of nursing security system in the medical emergency support of the 19th Asian Games,Hangzhou.Nursing work is one of the important links in the medical security system of large-scale sports events and provides a solid foundation for the smooth operation of the events,this paper systematically summarizes the key points and main practices of the whole process nursing security in medical emergency security,focusing on the selection and training of nursing personnel,exercise and assessment,and provides reference for medical emergency nursing work in large-scale sports events in the future.