近年来,辐射源保管不当或丢失引起的各类辐射源丢失事故层出不穷。针对需要,国际上对各种状况下的辐射源搜索和定位已有多个追踪和检测系统。以国家核和辐射事故卫生应急队配备的移动搜源系统(MDS)为研究对象,介绍MDS的构成特点,并结合应急队的任务特点,说明其在应急救援与辐射源定位追踪中使用的必要性和发展方向。 In recent years, accidental loss of various types of radiation sources caused by improper storage or loss of radiation sources has emerged. In response to needs, there have been many tracking and detection systems for searching and locating radiation sources under various conditions in the world. Taking the mobile search system (MDS) equipped with the national emergency response team and the emergency response team as the research object, this paper introduces the characteristics of the MDS and the necessity of using it in the emergency rescue and tracking of radiation sources Sex and development direction.