为观察锰对接触女工心率、心电图和血压的影响进行本研究。结果发现生产环境空气中ＭｎＯ２浓度几何均值为０．０７ｍｇ／ｍ３（０．０２～０．２９ｍｇ／ｍ３），接触组心率比对照组明显快（Ｐ＜０．０５）；但与５年前的体检资料相比较（自身对照），接锰女工心率明显变慢（Ｐ＜０．０５），提示低浓度锰暴露可以引起女工心率的改变。 This study was conducted to observe the effect of manganese on female workers’ exposure to heart rate, electrocardiogram and blood pressure. The results showed that the geometric mean concentration of MnO2 in production air was 0.07mg / m3 (0.02-0.29mg / m3), and the heart rate in the exposed group was significantly faster than that in the control group (P <0.05) Compared with the physical examination data (self-control), the heart rate of women receiving manganese was significantly slower (P <0.05), suggesting that low concentration of manganese exposure can cause changes in female workers’ heart rate.