儿童蛋白质-能量营养不良是发展中国家普遍存在的营养缺乏病之一。主要表现在身高、体重低于正常[1]。我国政府对儿童的营养问题十分重视,在90年代儿童发展纲要中提出到2000年儿童营养要有较大改进,营养不良患病率要有明显下降。为此,我们于1990年对青海省民和、互助两县的农村 Children’s protein-energy malnutrition is one of the prevalence of nutritional deficiency in developing countries. Mainly in height, weight below normal [1]. My government attaches great importance to children’s nutritional problems. In the framework for children’s development in the 1990s, they proposed that children’s nutrition should be greatly improved by the year 2000, and the prevalence of malnutrition should be significantly reduced. To this end, we in 1990 on the people of Qinghai Province, mutual aid two counties in rural areas