Abstract:This paper studies on the measurement techniques of radioactive inert gases emited in nuclear power plants. Through illustrating the principles of generating electricity, we know the radioactive inert gases sources and the radioactive hazards on human primarily sensitive organ. Then, we introduces the principles of nuclear radiation measurement, and the measurement methods, such as ionizing room messurement method, plastic card bodymeasurenment method, semiconductor dector method,and make some comparison as well. In this paper ,we put forward "online survey" cocept , correction the shortcomings of the traditional measurement methods.For example, the need to read out the data with other equipmen resulting in the acquisition of outcome; Most methods can only carry on a point measurements, and materials consistency is poor;Except for the photosensitive film mthod,the other methods are poor at spatial resolving power.The hardware and software design method in automatic cotroll field are applied to the field of nuclear radiation measurement,to realize the design about radioactive inert gases measure based on CAN bus.In the paper we make the choice from sampling methods to measure mthod and point out the technical indicators we shoud reach. Keywords: nuclear power plant inert gases online survey