The present invention relates to a method for analyzing and evaluating the radiological characteristics of a nuclear power plant in a permanent shutdown, the purpose of which is to analyze and evaluate the radiological characteristics of a nuclear power plant in a permanent shutdown by analyzing and evaluating the radiological characteristics of each system and each design space of a nuclear power plant in a permanent shutdown. It is to complete the characteristic design and to safely and efficiently complete the decommissioning task for the permanently shut down nuclear power plant to be performed in the future based on the completed design drawing, and the composition is to provide the transitional radiological characteristics of each system among the permanently shut down nuclear power plants. measuring the radiological characteristics of each system to be measured; A radiological characteristic measurement step for each design space of measuring the transitional radiological characteristics for each design space during a permanently shut down nuclear power plant; a radiological characteristic analysis step for each system, which prepares a variogram of the radiological characteristic for each system obtained through the step of measuring the radiological characteristics for each system and analyzes the measured spatial correlation; a radiographic characteristic analysis step for each design space, which prepares a variogram of the radiological characteristic for each design space obtained through the measurement of the radiological characteristic for each design space, and analyzes the measured spatial correlation; In order to perform the decommissioning task of the permanently shut down nuclear power plant, the analysis results analyzed through the radiological characteristic analysis step for each system and the radiological characteristic analysis step for each design space are analyzed using spatial analysis techniques for each system and Pollution distribution analysis step of analyzing spatial correlation of contamination distribution for each design space; a radiological property design drawing step of creating a radiological property design drawing that indicates the pollution distribution properties for each system and design space obtained from the pollution distribution analysis step in the design drawing of a permanently shut down nuclear power plant; Based on the radiological characteristics design for the transitional period of the permanent shutdown nuclear power plant completed by the above-mentioned radiological characteristic design drawing step, design a specific action plan for the decommissioning task of the permanently shut down nuclear power plant to be carried out in the future, and safely and efficiently dismantle the permanently shut down nuclear power plant It is characterized in that it consists of a radiological specific evaluation stage in the transitional period of a permanent shutdown nuclear power plant to enable the completion of the
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