Ｘ射线用于医学诊断已有悠久的历史 ,近年来 ,随着放射技术的发展 ,愈来愈多的人受到了来自医疗照射的电离辐射。其中 ,部分电离辐射对人们的预防保健和疾病诊断起到了积极的作用 ,但如使用不当也给人们增加了不必要的照射 ,本文通过对Ｘ射线检查情况的调查 ,谈谈医疗照射中的 X-ray has a long history of being used in medical diagnosis. In recent years, with the development of radiation technology, more and more people have been exposed to ionizing radiation from medical treatment. Among them, part of the ionizing radiation has played a positive role in people’s preventive health care and disease diagnosis. However, if used improperly, people also increase unnecessary radiation. Through the investigation of X-ray examination,