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通过对小鼠幼鼠方位食物迷津的测试，了解生命早期被动吸烟对学习能力的影响。两组实验动物分别在胚胎期和生后１个月内接触香烟烟气，烟草浓度为８ｇ／ｍ３，每日７小时，３２日龄时进行迷津的训练和测试。结果（以每只小鼠最好成绩计）表明，宫内和生后１个月吸烟小鼠分别较各自对照组多出错０．７４±０．８４次和１．５２±０．８０次（Ｐ＜０．０５）；多用时间６．８５±１２．２０秒和１７．３７±１１．６７秒（Ｐ＜０．０５）。实验组仔鼠和幼鼠体重也明显低于对照组。说明在生命早期被动吸烟对小鼠体质和智力发育有明显影响
Through the mouse mate azimuth food maze test to understand the impact of early life passive smoking on learning ability. Two groups of experimental animals were exposed to cigarette smoke in the embryonic period and one month after birth. Tobacco concentration was 8g / m3, 7 hours a day, 32 days of age maze training and testing. The results, based on the best score per mouse, showed that the number of smokers in intrauterine and postnatal months, respectively, was 0.74 ± 0.84 and 1.52 ± 0.80 times worse than their respective controls P <0.05); prolonged use time was 6.85 ± 12.20 seconds and 17.37 ± 11.67 seconds (P <0.05). The pups and pups in the experimental group also had significantly lower body weight than the control group. Passive smoking in early life shows a significant impact on physical and mental development in mice