中文摘要：

根据国际辐射单位与测量委员会（ICRU）、联合国原子辐射影响科学委员会（UNSCEAR）和国际放射防护委员会（ICRP）等权威国际组织不断演进的新出版物,归纳揭示出电离辐射量体系、放射生物学效应和放射防护体系等构成放射防护三大重要基础的新进展;同时本文第四部分扼要评述影响面很广的热点课题医疗照射防护的新进展。

英文摘要：

Based on the evolution of new publications by the International Commission on Radiation Units and Measurements（ ICRU）,the United Nations Scientific Committee on the Effects of Atomic Radiation（ UNSCEAR） and the International Commission on Radiological Protection（ ICRP）,this paper reveals new progress of the ionizing radiation quantity system,radiological biological effects and radiological protection system which form the basis of radiological protection discipline. Thus it can grasp the development trend of radiological protection field. The fourth part of this article reviews the new progress of medical exposure protection,and it is closely related to all the public in the field of radiological protection.