核黄素又称维生素B_2,属水溶性维生素的一种,它通过组成黄酶的辅酶而在机体代谢中扮演重要的角色。由于人体内不能合成,必必靠膳食补充。学校寄宿生,特别是山区农村中学的寄宿生,往往因为学生食堂菜谱中缺少核黄素,造成撮入量不足,使核黄素缺乏症短期内成批发病,甚至发病人数超过寄宿生的三分之二,影响学生的健康和学习。发病期间可见到轻重不一的症状和体征,主要症状有食欲不佳、软弱 Riboflavin, also known as vitamin B_2, is a kind of water-soluble vitamin that plays an important role in the body metabolism through the coenzyme that constitutes the xanthophyll. As the body can not be synthesized, must rely on dietary supplement. School boarders, especially boarders in mountainous rural middle schools, often lack outbreaks due to the lack of riboflavin in their canteen recipes, causing the incidence of riboflavin deficiency to occur in batches in the short term, even to more than two-thirds of boarders , Affecting students’ health and learning. Can be seen during the onset of varying severity of symptoms and signs, the main symptoms are poor appetite, weakness