In April 2011 by the news media Deng Fei launched the“free lunch”charity project activities,it has aroused widespread concern,so that nutrition of children in poor areas of people becoming very concerned about the topic。The“Long-term Education Reform and Development Plan”is put forward to improve the nutritive condition of rural students,but the process is very slow。“Free Lunch”campaign makes the nutrition of children in poor areas become more urgent,and the problem get the attention and response of government department ssoon,and in a short time issued“on the implementation of rural compulsory education to improve student nutrition program views”and a series of specific measures。This paper uses the famous American public policy scholar John Golden’s Multiple-Streams analysis model,with the origins of the problem,the policy streams,and the political streams of the three issues to elaborate the various influencing factors and processes of“nutrition improvement program”。