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本文以11岁儿童为研究对象，分析了尿中铅含量与智商之间关系；结果发现：被调查儿童尿铅含量与总智商未见显著相关关系，但与拼图、算术评分呈现出高度负相关。高尿铅组儿童低智商率明显偏高，表明铅对儿童智力发育可能存在某些影响，本研究为进一步降低环境中铅污染，促进儿童智力发育提供依据。
In this paper, 11-year-old children as the research object, the relationship between urine lead content and IQ was analyzed. The results showed that there was no significant correlation between urinary lead levels and total IQ, but negative correlation with jigsaw puzzles and arithmetic scores . Children with high urinary lead have a significantly lower rate of low IQ, indicating that lead may have some impact on children’s mental development. This study provides the basis for further reducing lead pollution in the environment and promoting children’s mental development.