春季多风干燥，有的人会出现嘴唇干裂，严重者可发生口角炎、唇炎等。其主要原因是缺少维生素B2，维生素B2亦称核黄素，它参与人体内生物氧化酶的催化过程。缺乏维生素B2容易得舌炎、眼结膜炎、角膜炎及脂溢性皮炎等疾患。食物中以动物肝、肾、心等维生素B2的含量较高，其次是 Windy and dry in spring, some people will appear chapped lips, severe cases may occur angular cheilitis, cheilitis and so on. The main reason is the lack of vitamin B2, also known as vitamin B2 riboflavin, which is involved in the human body bio-oxidase catalytic process. Lack of vitamin B2 is easy to get glossitis, conjunctivitis, keratitis and seborrheic dermatitis and other diseases. Food to animal liver, kidney, heart and other high content of vitamin B2, followed by