Nuclear power object protection effectiveness quantifying and evaluating method and device

The present invention provides a nuclear power object protection effectiveness quantifying and evaluating method and device. The method comprises the steps of 1 establishing a two-dimensional facility description model of an object protection system environment; 2 carrying out the external invasion analysis according to the two-dimensional facility description model and aiming at the external enemy invasion situation; 3 according to the external invasion enemy information and the response power information, carrying out the prevention analysis on the external enemy invasion situation; 4 carrying out the insider crime analysis according to the two-dimensional facility description model and aiming at the nuclear material steal situations of the insiders; 5 calculating the risk value of the external enemy invasion according to the analysis results of the steps 2 and 3, and then calculating the risk value of the insider crime according to the analysis result of the step 4. According to the present invention, the