为探讨环境极低频电磁场对人群健康的影响，调查了广州市某区２２０ｋＶ高压输电线路产生的环境极低频电磁场（ＥＬＦ场）的强度，并就ＥＬＦ场对周围居民健康的影响进行了初步观察。结果表明ＥＬＦ场强度未超出国外推荐的暂行最大容许标准。接触ＥＬＦ场１～２、３～４年和５年及以上的居民与对照组比较，神衰综合征阳性率的差异不显著；尿中１７－ＫＳ和ＶＭＡ水平两组亦无差异显著性。提示在目前的接触水平和接触时间下，ＥＬＦ场对人体神经系统、内分泌系统，尤其是肾上腺功能无明显影响。 In order to investigate the effect of ELF electromagnetic field on human health, the intensity of ELF field generated by 220kV high voltage transmission line in a certain area of ​​Guangzhou was investigated. The effects of ELF field on the health of surrounding residents were also observed. The results show that the ELF field strength does not exceed the recommended maximum temporary allowable standard. There was no significant difference in the positive rates of Shenyin Syndrome among residents who were exposed to ELF for 1 ~ 2, 3 ~ 4 and 5 years and above as compared with those in the control group. Urinary 17-KS and VMA levels were also not significantly different between the two groups. Hint ELF fields have no significant effect on the human nervous system, endocrine system, especially adrenal function at the current level of exposure and exposure time.