我园在省儿童保健院的协助下,对新入园的220名幼儿进行了血清维生素 A 水平测定。检查结果显示,维生素 A 缺乏(即测定值20μg/dl)者5人,占2.27%,亚临床维生素 A 缺乏(即20～39.8μg/dl)者59人,占39.8%。由此可见,维生素 A不足的幼儿占有相当大的比例。维生素 A 对人体很多系统具有重要作用,它不仅能促进体内组织蛋白的合成,加速生长发育,且能提 I park in the Provincial Child Health Center with the assistance of 220 newly admitted children on serum vitamin A level determination. The results showed that there were 5 persons (2.27%) with vitamin A deficiency (20 μg / dl) and 59 (39.8%) with subclinical vitamin A deficiency (20-39.8 μg / dl). This shows that children with vitamin A deficiency account for a large proportion. Vitamin A plays an important role in many systems of the human body. It not only promotes the synthesis of tissue proteins in the body and accelerates the growth and development,