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为了解婴儿碘营养状况对智能发育的影响，用碱灰化比色法测定了婴儿尿碘水平，又分别用新生儿２０项行为神经评分法及贝利婴幼儿发展量表评估了不同碘营养状况下０～０．５岁婴儿的智能发育。结果：１００例正常新生儿尿碘中位数为９４．５３μｇ／Ｌ。新生儿２０项行为神经评分中，行为能力３项低尿碘组评分明显低于正常尿碘组（Ｐ＜０．０１），２０项总评分两组间没有统计学差异（Ｐ＞０．０５）。０．５岁婴儿的智力发展指数和精神运动发展指数，低尿碘组明显低于正常尿碘组（Ｐ＜０．０５）。结果显示碘缺乏使婴儿智能的正常发育受到阻碍。
To understand the impact of infant iodine nutrition status on the development of intelligence, the level of urinary iodine in infants was determined by alkaline asar yellow colorimetric method, and 20 newborns’ behavioral neurological score method and Bailey’s Infant Development Scale were used to evaluate the effects of different iodine nutrition 0 ~ 0.5 years old baby’s intelligence development. Results: The median urinary iodine of 100 normal newborns was 94.53μg / L. Among 20 neonates with behavioral neurological scores, the scores of 3 low-urinary iodine groups were significantly lower than those of normal urinary iodine group (P <0.01). There was no significant difference between the two groups in 20 total scores (P> 0.05 ). The intelligence development index and psychomotor development index of 0.5-year-old infants were significantly lower than those of normal urinary iodine group (P <0.05). The results show that iodine deficiency impedes the normal development of infant intelligence.