The invention provides a nuclear facility retired waste virtual renovation and statistics system and method, and the system comprises a scene initialization module used for importing a pre-created nuclear facility three-dimensional model according to the demands of a user, and completing the binding of a radiation source of the nuclear facility three-dimensional model; a virtual operation module used for simulating actual retirement operation to cut and/or dismantle the nuclear facility three-dimensional model to generate a waste model in a target shape; a waste statistics module used for establishing a waste library storage waste model and counting waste information of the waste model; and a waste reconditioning module used for entering the waste library to select a target waste model forpackaging simulation, and judging whether the packaged target waste model meets the temporary storage requirement or not. The nuclear facility retired waste virtual renovation and statistics system and method provided by the invention not only can accurately record multi-dimensional waste information, but also can be used for comparing the advantages and disadvantages of different retired operation modes, so that a more reasonable execution scheme is formulated.