小剂量电离辐射长期照射对免疫功能的影响,国内武汉地区曾进行初步报道。为了摸索南京地区医用X线工作者小剂量长期照射对免疫功能状态的影响,为修订我国X线防护的标准提出一定的科学资料,我们在中国医学科学院放射医学研究所支持下,与江苏省防疫站共同协作,对南京地区X线工作者的免疫功能进行了一次调查,现将情况总结如下: The effect of long-term irradiation with low-dose ionizing radiation on immune function has been initially reported in Wuhan, China. In order to explore the impact of small-dose long-term irradiation of medical X-ray workers in Nanjing on the immune function status, some scientific data are provided for revising China’s X-ray protection standards. We are supported by the Institute of Radiation Medicine of the Chinese Academy of Medical Sciences and the epidemic prevention of Jiangsu Province. The stations collaborated and conducted a survey on the immune function of X-ray workers in Nanjing. The current situation is summarized as follows: