A packaging box manufacturing assistance apparatus for assisting in manufacture of a packaging box shaped by sequentially folding a blank using a manufacturing apparatus, the manufacturing assistance apparatus including: a storage unit that stores blank spec information relating to specs of the blank, folding spec information relating to folding specs on the manufacturing apparatus that folds the blank, and characteristic value information relating to a particular dynamic characteristic value of the blank in association with one another, an input unit that receives an entry of input information including at least the blank spec information, a processing unit that accesses the storage unit, acquires the characteristic value information corresponding to the input information entered via the input unit, and determines whether or not a value of the acquired characteristic value information falls within a predetermined proper range, and a display unit that displays a result of the determination by the processing u
