To efficiently pack various kinds of freight in a plurality of kinds of containers for sending objects to a number of consignees.

Various freights can be efficiently packed in a plurality kinds of containers, by providing a delivery data input part 31 in which delivery data 41 constituted of the kind and the number of freight at every consignee are input, an algorithm part 32 of the packing design allocating freight against the kinds and the number of the containers, on the basis of the input delivery data 31 and combination data 42 of the containers in which the combination of the kinds and the number of the containers for the objects of the freight at every consignee is preserved in advance, and a packing result output part 33 outputting the allocated packing results as packed result data.