To execute the storing of the receipt cargos and shipping cargos with the minimum cost, by calculating the cost of every system, on the basis of the information and unit cost for calculating the cost of every stored system for storing the receipt cargos and shipping cargos on the demand of arrival and shipping.

When the information of arrival and shipping demand is received by an information on arrival and shipping demand input means 101 from an external system, a total cost of each system is calculated on the basis of an information by the cost of each system holding means 110 which holds the information for calculating the cost of every receipt cargos and shipping cargos storing system, and a unit cost, and the information on the demand of arrival and shipping. Then the receipt cargos and shipping cargos storing system selecting means 103 compares the calculated total costs, and selects the system of the minimum cost. An information on workmanship instruction output means 105 transfers the result of the selection as the system for storing the receipt cargos and shipping cargos with the minimum cost, to an external system such as an automatic warehouse or the like as the workmanship instruction information.