A container accommodation condition determination method of determining an accommodation condition for accommodating a plurality of waste pieces , obtained by cutting radioactive waste , into at least one storage container , for obtaining at least one waste body by accommodating the plurality of waste pieces into the at least one storage container, the method comprising: a step (S801, S1205) of obtaining dose information of each of the plurality of waste pieces; a step of, assuming, for each of a plurality of arrangement condition candidates specifying the storage container in which each of the waste pieces is to be stored and an accommodation position inside the storage container , that the waste pieces are arranged inside the storage container in accordance with the arrangement condition candidate , and of selecting at least one of the arrangement condition candidates which satisfy a limiting condition required for the waste body in each of the storage containers; a step (S806, S1210) of calculating a necessary storage container number which is the number of storage containers required to accommodate the plurality of waste pieces in accordance with the selected arrangement condition candidate ; and a step of specifying the arrangement condition candidate such that the necessary storage container number is minimum, wherein the step of selecting the arrangement condition candidate includes obtaining a surface dose rate of the waste body in a case where each of the waste pieces is arranged at the accommodation position in the storage container specified by the arrangement condition candidate on the basis of the dose information of each of the waste pieces , and selecting the arrangement condition candidate satisfying the limiting condition at least specifying that the surface dose rate of the waste body is not higher than a threshold. a step (S801, S1205) of obtaining dose information of each of the plurality of waste pieces; a step of, assuming, for each of a plurality of arrangement condition candidates specifying the storage container in which each of the waste pieces is to be stored and an accommodation position inside the storage container , that the waste pieces are arranged inside the storage container in accordance with the arrangement condition candidate , and of selecting at least one of the arrangement condition candidates which satisfy a limiting condition required for the waste body in each of the storage containers; a step (S806, S1210) of calculating a necessary storage container number which is the number of storage containers required to accommodate the plurality of waste pieces in accordance with the selected arrangement condition candidate ; and a step of specifying the arrangement condition candidate such that the necessary storage container number is minimum, wherein the step of selecting the arrangement condition candidate includes obtaining a surface dose rate of the waste body in a case where each of the waste pieces is arranged at the accommodation position in the storage container specified by the arrangement condition candidate on the basis of the dose information of each of the waste pieces , and selecting the arrangement condition candidate satisfying the limiting condition at least specifying that the surface dose rate of the waste body is not higher than a threshold. obtaining a surface dose rate of the waste body in a case where each of the waste pieces is arranged at the accommodation position in the storage container specified by the arrangement condition candidate on the basis of the dose information of each of the waste pieces , and selecting the arrangement condition candidate satisfying the limiting condition at least specifying that the surface dose rate of the waste body is not higher than a threshold. <EOS>