铁缺乏症是一种非常常见的、危害儿童健康的营养缺乏症 ,患儿不仅有血液系统的异常表现 ,还可以出现行为发育的异常。大量的动物实验证实铁缺乏可以通过影响中枢神经系统多巴胺的功能从而引起认知行为改变 ,这可以从某些方面解释铁缺乏患儿所表现出的认知行为异常。现就铁缺乏时中枢神经系统多巴胺的功能改变进行综述 ,以期对铁缺乏致行为异常的机制进行探讨 Iron deficiency is a very common nutritional deficiencies that endanger the health of children, children not only have abnormal performance of the blood system, but also abnormal behavior development. A large number of animal experiments confirm that iron deficiency can cause cognitive behavioral changes by affecting the function of central nervous system dopamine, which can explain some aspects of cognitive deficits in children with iron deficiency. Now on the lack of iron central nervous system dopamine functional changes are reviewed in order to explore the mechanism of iron deficiency induced behavioral abnormalities