目前,我国儿童的营养问题是,一方面热量过剩,小胖子日趋增多,另一方面又存在微营养素缺乏现象。据统计,我国儿童贫血患病率达42.1％,亚临床维生素A缺乏高达60％,钙和核黄素缺乏也达到40％左右。微营养素的缺乏与蛋白质、热能缺乏一样,也会引起体内代谢紊乱,造成疾病。为此,我国把5月20日定为中国学生营养日,目的就 At present, the nutritional problems of children in our country are excess calorie on one hand, increasing number of small fat men on the other hand and lack of micronutrients on the other hand. According to statistics, the prevalence of anemia in children in China reached 42.1%, subclinical vitamin A deficiency up to 60%, calcium and riboflavin deficiency also reached about 40%. The lack of micronutrients and protein, lack of heat, can also cause metabolic disorders in the body, causing disease. To this end, China will be May 20 as China’s student nutrition day, purpose